18657340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{983}}^1$

素因数の和:1078

約数の個数: 48

約数和(自身を含む): 42815808

約数和(自身を除く): 24158468

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 73, 130, 146, 260, 292, 365, 730, 949, 983, 1460, 1898, 1966, 3796, 3932, 4745, 4915, 9490, 9830, 12779, 18980, 19660, 25558, 51116, 63895, 71759, 127790, 143518, 255580, 287036, 358795, 717590, 932867, 1435180, 1865734, 3731468, 4664335, 9328670, 18657340]

約数ペア:

[(1, 18657340), (2, 9328670), (4, 4664335), (5, 3731468), (10, 1865734), (13, 1435180), (20, 932867), (26, 717590), (52, 358795), (65, 287036), (73, 255580), (130, 143518), (146, 127790), (260, 71759), (292, 63895), (365, 51116), (730, 25558), (949, 19660), (983, 18980), (1460, 12779), (1898, 9830), (1966, 9490), (3796, 4915), (3932, 4745)]