201719980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{130987}}^1$

素因数の和:131014

約数の個数: 48

約数和(自身を含む): 528143616

約数和(自身を除く): 326423636

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 130987, 261974, 523948, 654935, 916909, 1309870, 1440857, 1833818, 2619740, 2881714, 3667636, 4584545, 5763428, 7204285, 9169090, 10085999, 14408570, 18338180, 20171998, 28817140, 40343996, 50429995, 100859990, 201719980]

約数ペア:

[(1, 201719980), (2, 100859990), (4, 50429995), (5, 40343996), (7, 28817140), (10, 20171998), (11, 18338180), (14, 14408570), (20, 10085999), (22, 9169090), (28, 7204285), (35, 5763428), (44, 4584545), (55, 3667636), (70, 2881714), (77, 2619740), (110, 1833818), (140, 1440857), (154, 1309870), (220, 916909), (308, 654935), (385, 523948), (770, 261974), (1540, 130987)]