221640720

素因数分解:

$2^4\times 3^1\times 5^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{401}}^1$

素因数の和:478

約数の個数: 240

約数和(自身を含む): 818304768

約数和(自身を除く): 596664048

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 47, 48, 49, 56, 60, 70, 80, 84, 94, 98, 105, 112, 120, 140, 141, 147, 168, 188, 196, 210, 235, 240, 245, 280, 282, 294, 329, 336, 376, 392, 401, 420, 470, 490, 560, 564, 588, 658, 705, 735, 752, 784, 802, 840, 940, 980, 987, 1128, 1176, 1203, 1316, 1410, 1470, 1604, 1645, 1680, 1880, 1960, 1974, 2005, 2256, 2303, 2352, 2406, 2632, 2807, 2820, 2940, 3208, 3290, 3760, 3920, 3948, 4010, 4606, 4812, 4935, 5264, 5614, 5640, 5880, 6015, 6416, 6580, 6909, 7896, 8020, 8421, 9212, 9624, 9870, 11228, 11280, 11515, 11760, 12030, 13160, 13818, 14035, 15792, 16040, 16842, 18424, 18847, 19248, 19649, 19740, 22456, 23030, 24060, 26320, 27636, 28070, 32080, 33684, 34545, 36848, 37694, 39298, 39480, 42105, 44912, 46060, 48120, 55272, 56140, 56541, 58947, 67368, 69090, 75388, 78596, 78960, 84210, 92120, 94235, 96240, 98245, 110544, 112280, 113082, 117894, 131929, 134736, 138180, 150776, 157192, 168420, 184240, 188470, 196490, 224560, 226164, 235788, 263858, 276360, 282705, 294735, 301552, 314384, 336840, 376940, 392980, 395787, 452328, 471576, 527716, 552720, 565410, 589470, 659645, 673680, 753880, 785960, 791574, 904656, 923503, 943152, 1055432, 1130820, 1178940, 1319290, 1507760, 1571920, 1583148, 1847006, 1978935, 2110864, 2261640, 2357880, 2638580, 2770509, 3166296, 3694012, 3957870, 4523280, 4617515, 4715760, 5277160, 5541018, 6332592, 7388024, 7915740, 9235030, 10554320, 11082036, 13852545, 14776048, 15831480, 18470060, 22164072, 27705090, 31662960, 36940120, 44328144, 55410180, 73880240, 110820360, 221640720]

約数ペア:

[(1, 221640720), (2, 110820360), (3, 73880240), (4, 55410180), (5, 44328144), (6, 36940120), (7, 31662960), (8, 27705090), (10, 22164072), (12, 18470060), (14, 15831480), (15, 14776048), (16, 13852545), (20, 11082036), (21, 10554320), (24, 9235030), (28, 7915740), (30, 7388024), (35, 6332592), (40, 5541018), (42, 5277160), (47, 4715760), (48, 4617515), (49, 4523280), (56, 3957870), (60, 3694012), (70, 3166296), (80, 2770509), (84, 2638580), (94, 2357880), (98, 2261640), (105, 2110864), (112, 1978935), (120, 1847006), (140, 1583148), (141, 1571920), (147, 1507760), (168, 1319290), (188, 1178940), (196, 1130820), (210, 1055432), (235, 943152), (240, 923503), (245, 904656), (280, 791574), (282, 785960), (294, 753880), (329, 673680), (336, 659645), (376, 589470), (392, 565410), (401, 552720), (420, 527716), (470, 471576), (490, 452328), (560, 395787), (564, 392980), (588, 376940), (658, 336840), (705, 314384), (735, 301552), (752, 294735), (784, 282705), (802, 276360), (840, 263858), (940, 235788), (980, 226164), (987, 224560), (1128, 196490), (1176, 188470), (1203, 184240), (1316, 168420), (1410, 157192), (1470, 150776), (1604, 138180), (1645, 134736), (1680, 131929), (1880, 117894), (1960, 113082), (1974, 112280), (2005, 110544), (2256, 98245), (2303, 96240), (2352, 94235), (2406, 92120), (2632, 84210), (2807, 78960), (2820, 78596), (2940, 75388), (3208, 69090), (3290, 67368), (3760, 58947), (3920, 56541), (3948, 56140), (4010, 55272), (4606, 48120), (4812, 46060), (4935, 44912), (5264, 42105), (5614, 39480), (5640, 39298), (5880, 37694), (6015, 36848), (6416, 34545), (6580, 33684), (6909, 32080), (7896, 28070), (8020, 27636), (8421, 26320), (9212, 24060), (9624, 23030), (9870, 22456), (11228, 19740), (11280, 19649), (11515, 19248), (11760, 18847), (12030, 18424), (13160, 16842), (13818, 16040), (14035, 15792)]