208444990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{257}}^1\times {\mathrm{367}}^1$

素因数の和:661

約数の個数: 64

約数和(自身を含む): 430665984

約数和(自身を除く): 222220994

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 170, 221, 257, 367, 442, 514, 734, 1105, 1285, 1835, 2210, 2570, 3341, 3670, 4369, 4771, 6239, 6682, 8738, 9542, 12478, 16705, 21845, 23855, 31195, 33410, 43690, 47710, 56797, 62390, 81107, 94319, 113594, 162214, 188638, 283985, 405535, 471595, 567970, 811070, 943190, 1226147, 1603423, 2452294, 3206846, 6130735, 8017115, 12261470, 16034230, 20844499, 41688998, 104222495, 208444990]

約数ペア:

[(1, 208444990), (2, 104222495), (5, 41688998), (10, 20844499), (13, 16034230), (17, 12261470), (26, 8017115), (34, 6130735), (65, 3206846), (85, 2452294), (130, 1603423), (170, 1226147), (221, 943190), (257, 811070), (367, 567970), (442, 471595), (514, 405535), (734, 283985), (1105, 188638), (1285, 162214), (1835, 113594), (2210, 94319), (2570, 81107), (3341, 62390), (3670, 56797), (4369, 47710), (4771, 43690), (6239, 33410), (6682, 31195), (8738, 23855), (9542, 21845), (12478, 16705)]