21767980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{2887}}^1$

素因数の和:2938

約数の個数: 48

約数和(自身を含む): 50944320

約数和(自身を除く): 29176340

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 29, 52, 58, 65, 116, 130, 145, 260, 290, 377, 580, 754, 1508, 1885, 2887, 3770, 5774, 7540, 11548, 14435, 28870, 37531, 57740, 75062, 83723, 150124, 167446, 187655, 334892, 375310, 418615, 750620, 837230, 1088399, 1674460, 2176798, 4353596, 5441995, 10883990, 21767980]

約数ペア:

[(1, 21767980), (2, 10883990), (4, 5441995), (5, 4353596), (10, 2176798), (13, 1674460), (20, 1088399), (26, 837230), (29, 750620), (52, 418615), (58, 375310), (65, 334892), (116, 187655), (130, 167446), (145, 150124), (260, 83723), (290, 75062), (377, 57740), (580, 37531), (754, 28870), (1508, 14435), (1885, 11548), (2887, 7540), (3770, 5774)]