19772780

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{467}}^1$

素因数の和:578

約数の個数: 48

約数和(自身を含む): 43636320

約数和(自身を除く): 23863540

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 73, 116, 145, 146, 290, 292, 365, 467, 580, 730, 934, 1460, 1868, 2117, 2335, 4234, 4670, 8468, 9340, 10585, 13543, 21170, 27086, 34091, 42340, 54172, 67715, 68182, 135430, 136364, 170455, 270860, 340910, 681820, 988639, 1977278, 3954556, 4943195, 9886390, 19772780]

約数ペア:

[(1, 19772780), (2, 9886390), (4, 4943195), (5, 3954556), (10, 1977278), (20, 988639), (29, 681820), (58, 340910), (73, 270860), (116, 170455), (145, 136364), (146, 135430), (290, 68182), (292, 67715), (365, 54172), (467, 42340), (580, 34091), (730, 27086), (934, 21170), (1460, 13543), (1868, 10585), (2117, 9340), (2335, 8468), (4234, 4670)]