11211980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{1487}}^1$

素因数の和:1538

約数の個数: 48

約数和(自身を含む): 26248320

約数和(自身を除く): 15036340

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 29, 52, 58, 65, 116, 130, 145, 260, 290, 377, 580, 754, 1487, 1508, 1885, 2974, 3770, 5948, 7435, 7540, 14870, 19331, 29740, 38662, 43123, 77324, 86246, 96655, 172492, 193310, 215615, 386620, 431230, 560599, 862460, 1121198, 2242396, 2802995, 5605990, 11211980]

約数ペア:

[(1, 11211980), (2, 5605990), (4, 2802995), (5, 2242396), (10, 1121198), (13, 862460), (20, 560599), (26, 431230), (29, 386620), (52, 215615), (58, 193310), (65, 172492), (116, 96655), (130, 86246), (145, 77324), (260, 43123), (290, 38662), (377, 29740), (580, 19331), (754, 14870), (1487, 7540), (1508, 7435), (1885, 5948), (2974, 3770)]