17971460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^3\times {\mathrm{409}}^1$

素因数の和:457

約数の個数: 48

約数和(自身を含む): 40983600

約数和(自身を除く): 23012140

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 409, 676, 818, 845, 1636, 1690, 2045, 2197, 3380, 4090, 4394, 5317, 8180, 8788, 10634, 10985, 21268, 21970, 26585, 43940, 53170, 69121, 106340, 138242, 276484, 345605, 691210, 898573, 1382420, 1797146, 3594292, 4492865, 8985730, 17971460]

約数ペア:

[(1, 17971460), (2, 8985730), (4, 4492865), (5, 3594292), (10, 1797146), (13, 1382420), (20, 898573), (26, 691210), (52, 345605), (65, 276484), (130, 138242), (169, 106340), (260, 69121), (338, 53170), (409, 43940), (676, 26585), (818, 21970), (845, 21268), (1636, 10985), (1690, 10634), (2045, 8788), (2197, 8180), (3380, 5317), (4090, 4394)]