28658280

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{313}}^1$

素因数の和:443

約数の個数: 128

約数和(自身を含む): 99475200

約数和(自身を除く): 70816920

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, 84, 105, 109, 120, 140, 168, 210, 218, 280, 313, 327, 420, 436, 545, 626, 654, 763, 840, 872, 939, 1090, 1252, 1308, 1526, 1565, 1635, 1878, 2180, 2191, 2289, 2504, 2616, 3052, 3130, 3270, 3756, 3815, 4360, 4382, 4578, 4695, 6104, 6260, 6540, 6573, 7512, 7630, 8764, 9156, 9390, 10955, 11445, 12520, 13080, 13146, 15260, 17528, 18312, 18780, 21910, 22890, 26292, 30520, 32865, 34117, 37560, 43820, 45780, 52584, 65730, 68234, 87640, 91560, 102351, 131460, 136468, 170585, 204702, 238819, 262920, 272936, 341170, 409404, 477638, 511755, 682340, 716457, 818808, 955276, 1023510, 1194095, 1364680, 1432914, 1910552, 2047020, 2388190, 2865828, 3582285, 4094040, 4776380, 5731656, 7164570, 9552760, 14329140, 28658280]

約数ペア:

[(1, 28658280), (2, 14329140), (3, 9552760), (4, 7164570), (5, 5731656), (6, 4776380), (7, 4094040), (8, 3582285), (10, 2865828), (12, 2388190), (14, 2047020), (15, 1910552), (20, 1432914), (21, 1364680), (24, 1194095), (28, 1023510), (30, 955276), (35, 818808), (40, 716457), (42, 682340), (56, 511755), (60, 477638), (70, 409404), (84, 341170), (105, 272936), (109, 262920), (120, 238819), (140, 204702), (168, 170585), (210, 136468), (218, 131460), (280, 102351), (313, 91560), (327, 87640), (420, 68234), (436, 65730), (545, 52584), (626, 45780), (654, 43820), (763, 37560), (840, 34117), (872, 32865), (939, 30520), (1090, 26292), (1252, 22890), (1308, 21910), (1526, 18780), (1565, 18312), (1635, 17528), (1878, 15260), (2180, 13146), (2191, 13080), (2289, 12520), (2504, 11445), (2616, 10955), (3052, 9390), (3130, 9156), (3270, 8764), (3756, 7630), (3815, 7512), (4360, 6573), (4382, 6540), (4578, 6260), (4695, 6104)]