201720970

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1\times {\mathrm{167}}^1$

素因数の和:403

約数の個数: 64

約数和(自身を含む): 406425600

約数和(自身を除く): 204704630

約数列:

[1, 2, 5, 10, 11, 22, 55, 79, 110, 139, 158, 167, 278, 334, 395, 695, 790, 835, 869, 1390, 1529, 1670, 1738, 1837, 3058, 3674, 4345, 7645, 8690, 9185, 10981, 13193, 15290, 18370, 21962, 23213, 26386, 46426, 54905, 65965, 109810, 116065, 120791, 131930, 145123, 232130, 241582, 255343, 290246, 510686, 603955, 725615, 1207910, 1276715, 1451230, 1833827, 2553430, 3667654, 9169135, 18338270, 20172097, 40344194, 100860485, 201720970]

約数ペア:

[(1, 201720970), (2, 100860485), (5, 40344194), (10, 20172097), (11, 18338270), (22, 9169135), (55, 3667654), (79, 2553430), (110, 1833827), (139, 1451230), (158, 1276715), (167, 1207910), (278, 725615), (334, 603955), (395, 510686), (695, 290246), (790, 255343), (835, 241582), (869, 232130), (1390, 145123), (1529, 131930), (1670, 120791), (1738, 116065), (1837, 109810), (3058, 65965), (3674, 54905), (4345, 46426), (7645, 26386), (8690, 23213), (9185, 21962), (10981, 18370), (13193, 15290)]