20770680

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{313}}^1$

素因数の和:413

約数の個数: 128

約数和(自身を含む): 72345600

約数和(自身を除く): 51574920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 79, 84, 105, 120, 140, 158, 168, 210, 237, 280, 313, 316, 395, 420, 474, 553, 626, 632, 790, 840, 939, 948, 1106, 1185, 1252, 1565, 1580, 1659, 1878, 1896, 2191, 2212, 2370, 2504, 2765, 3130, 3160, 3318, 3756, 4382, 4424, 4695, 4740, 5530, 6260, 6573, 6636, 7512, 8295, 8764, 9390, 9480, 10955, 11060, 12520, 13146, 13272, 16590, 17528, 18780, 21910, 22120, 24727, 26292, 32865, 33180, 37560, 43820, 49454, 52584, 65730, 66360, 74181, 87640, 98908, 123635, 131460, 148362, 173089, 197816, 247270, 262920, 296724, 346178, 370905, 494540, 519267, 593448, 692356, 741810, 865445, 989080, 1038534, 1384712, 1483620, 1730890, 2077068, 2596335, 2967240, 3461780, 4154136, 5192670, 6923560, 10385340, 20770680]

約数ペア:

[(1, 20770680), (2, 10385340), (3, 6923560), (4, 5192670), (5, 4154136), (6, 3461780), (7, 2967240), (8, 2596335), (10, 2077068), (12, 1730890), (14, 1483620), (15, 1384712), (20, 1038534), (21, 989080), (24, 865445), (28, 741810), (30, 692356), (35, 593448), (40, 519267), (42, 494540), (56, 370905), (60, 346178), (70, 296724), (79, 262920), (84, 247270), (105, 197816), (120, 173089), (140, 148362), (158, 131460), (168, 123635), (210, 98908), (237, 87640), (280, 74181), (313, 66360), (316, 65730), (395, 52584), (420, 49454), (474, 43820), (553, 37560), (626, 33180), (632, 32865), (790, 26292), (840, 24727), (939, 22120), (948, 21910), (1106, 18780), (1185, 17528), (1252, 16590), (1565, 13272), (1580, 13146), (1659, 12520), (1878, 11060), (1896, 10955), (2191, 9480), (2212, 9390), (2370, 8764), (2504, 8295), (2765, 7512), (3130, 6636), (3160, 6573), (3318, 6260), (3756, 5530), (4382, 4740), (4424, 4695)]