1640255980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1\times {\mathrm{937}}^1$

素因数の和:1139

約数の個数: 96

約数和(自身を含む): 3848201280

約数和(自身を除く): 2207945300

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 73, 109, 110, 146, 218, 220, 292, 365, 436, 545, 730, 803, 937, 1090, 1199, 1460, 1606, 1874, 2180, 2398, 3212, 3748, 4015, 4685, 4796, 5995, 7957, 8030, 9370, 10307, 11990, 15914, 16060, 18740, 20614, 23980, 31828, 39785, 41228, 51535, 68401, 79570, 87527, 102133, 103070, 136802, 159140, 175054, 204266, 206140, 273604, 342005, 350108, 408532, 437635, 510665, 684010, 752411, 875270, 1021330, 1123463, 1368020, 1504822, 1750540, 2042660, 2246926, 3009644, 3762055, 4493852, 5617315, 7455709, 7524110, 11234630, 14911418, 15048220, 22469260, 29822836, 37278545, 74557090, 82012799, 149114180, 164025598, 328051196, 410063995, 820127990, 1640255980]

約数ペア:

[(1, 1640255980), (2, 820127990), (4, 410063995), (5, 328051196), (10, 164025598), (11, 149114180), (20, 82012799), (22, 74557090), (44, 37278545), (55, 29822836), (73, 22469260), (109, 15048220), (110, 14911418), (146, 11234630), (218, 7524110), (220, 7455709), (292, 5617315), (365, 4493852), (436, 3762055), (545, 3009644), (730, 2246926), (803, 2042660), (937, 1750540), (1090, 1504822), (1199, 1368020), (1460, 1123463), (1606, 1021330), (1874, 875270), (2180, 752411), (2398, 684010), (3212, 510665), (3748, 437635), (4015, 408532), (4685, 350108), (4796, 342005), (5995, 273604), (7957, 206140), (8030, 204266), (9370, 175054), (10307, 159140), (11990, 136802), (15914, 103070), (16060, 102133), (18740, 87527), (20614, 79570), (23980, 68401), (31828, 51535), (39785, 41228)]