201218680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{379}}^1\times {\mathrm{1021}}^1$

素因数の和:1424

約数の個数: 64

約数和(自身を含む): 489333600

約数和(自身を除く): 288114920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 379, 520, 758, 1021, 1516, 1895, 2042, 3032, 3790, 4084, 4927, 5105, 7580, 8168, 9854, 10210, 13273, 15160, 19708, 20420, 24635, 26546, 39416, 40840, 49270, 53092, 66365, 98540, 106184, 132730, 197080, 265460, 386959, 530920, 773918, 1547836, 1934795, 3095672, 3869590, 5030467, 7739180, 10060934, 15478360, 20121868, 25152335, 40243736, 50304670, 100609340, 201218680]

約数ペア:

[(1, 201218680), (2, 100609340), (4, 50304670), (5, 40243736), (8, 25152335), (10, 20121868), (13, 15478360), (20, 10060934), (26, 7739180), (40, 5030467), (52, 3869590), (65, 3095672), (104, 1934795), (130, 1547836), (260, 773918), (379, 530920), (520, 386959), (758, 265460), (1021, 197080), (1516, 132730), (1895, 106184), (2042, 98540), (3032, 66365), (3790, 53092), (4084, 49270), (4927, 40840), (5105, 39416), (7580, 26546), (8168, 24635), (9854, 20420), (10210, 19708), (13273, 15160)]