19997880

素因数分解:

$2^3\times 3^1\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{179}}^1$

素因数の和:226

約数の個数: 192

約数和(自身を含む): 73872000

約数和(自身を除く): 53874120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 19, 20, 21, 24, 28, 30, 35, 38, 40, 42, 49, 56, 57, 60, 70, 76, 84, 95, 98, 105, 114, 120, 133, 140, 147, 152, 168, 179, 190, 196, 210, 228, 245, 266, 280, 285, 294, 358, 380, 392, 399, 420, 456, 490, 532, 537, 570, 588, 665, 716, 735, 760, 798, 840, 895, 931, 980, 1064, 1074, 1140, 1176, 1253, 1330, 1432, 1470, 1596, 1790, 1862, 1960, 1995, 2148, 2280, 2506, 2660, 2685, 2793, 2940, 3192, 3401, 3580, 3724, 3759, 3990, 4296, 4655, 5012, 5320, 5370, 5586, 5880, 6265, 6802, 7160, 7448, 7518, 7980, 8771, 9310, 10024, 10203, 10740, 11172, 12530, 13604, 13965, 15036, 15960, 17005, 17542, 18620, 18795, 20406, 21480, 22344, 23807, 25060, 26313, 27208, 27930, 30072, 34010, 35084, 37240, 37590, 40812, 43855, 47614, 50120, 51015, 52626, 55860, 68020, 70168, 71421, 75180, 81624, 87710, 95228, 102030, 105252, 111720, 119035, 131565, 136040, 142842, 150360, 166649, 175420, 190456, 204060, 210504, 238070, 263130, 285684, 333298, 350840, 357105, 408120, 476140, 499947, 526260, 571368, 666596, 714210, 833245, 952280, 999894, 1052520, 1333192, 1428420, 1666490, 1999788, 2499735, 2856840, 3332980, 3999576, 4999470, 6665960, 9998940, 19997880]

約数ペア:

[(1, 19997880), (2, 9998940), (3, 6665960), (4, 4999470), (5, 3999576), (6, 3332980), (7, 2856840), (8, 2499735), (10, 1999788), (12, 1666490), (14, 1428420), (15, 1333192), (19, 1052520), (20, 999894), (21, 952280), (24, 833245), (28, 714210), (30, 666596), (35, 571368), (38, 526260), (40, 499947), (42, 476140), (49, 408120), (56, 357105), (57, 350840), (60, 333298), (70, 285684), (76, 263130), (84, 238070), (95, 210504), (98, 204060), (105, 190456), (114, 175420), (120, 166649), (133, 150360), (140, 142842), (147, 136040), (152, 131565), (168, 119035), (179, 111720), (190, 105252), (196, 102030), (210, 95228), (228, 87710), (245, 81624), (266, 75180), (280, 71421), (285, 70168), (294, 68020), (358, 55860), (380, 52626), (392, 51015), (399, 50120), (420, 47614), (456, 43855), (490, 40812), (532, 37590), (537, 37240), (570, 35084), (588, 34010), (665, 30072), (716, 27930), (735, 27208), (760, 26313), (798, 25060), (840, 23807), (895, 22344), (931, 21480), (980, 20406), (1064, 18795), (1074, 18620), (1140, 17542), (1176, 17005), (1253, 15960), (1330, 15036), (1432, 13965), (1470, 13604), (1596, 12530), (1790, 11172), (1862, 10740), (1960, 10203), (1995, 10024), (2148, 9310), (2280, 8771), (2506, 7980), (2660, 7518), (2685, 7448), (2793, 7160), (2940, 6802), (3192, 6265), (3401, 5880), (3580, 5586), (3724, 5370), (3759, 5320), (3990, 5012), (4296, 4655)]