20245820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{73}}^1\times {\mathrm{283}}^1$

素因数の和:379

約数の個数: 72

約数和(自身を含む): 50312304

約数和(自身を除く): 30066484

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 73, 98, 140, 146, 196, 245, 283, 292, 365, 490, 511, 566, 730, 980, 1022, 1132, 1415, 1460, 1981, 2044, 2555, 2830, 3577, 3962, 5110, 5660, 7154, 7924, 9905, 10220, 13867, 14308, 17885, 19810, 20659, 27734, 35770, 39620, 41318, 55468, 69335, 71540, 82636, 103295, 138670, 144613, 206590, 277340, 289226, 413180, 578452, 723065, 1012291, 1446130, 2024582, 2892260, 4049164, 5061455, 10122910, 20245820]

約数ペア:

[(1, 20245820), (2, 10122910), (4, 5061455), (5, 4049164), (7, 2892260), (10, 2024582), (14, 1446130), (20, 1012291), (28, 723065), (35, 578452), (49, 413180), (70, 289226), (73, 277340), (98, 206590), (140, 144613), (146, 138670), (196, 103295), (245, 82636), (283, 71540), (292, 69335), (365, 55468), (490, 41318), (511, 39620), (566, 35770), (730, 27734), (980, 20659), (1022, 19810), (1132, 17885), (1415, 14308), (1460, 13867), (1981, 10220), (2044, 9905), (2555, 7924), (2830, 7154), (3577, 5660), (3962, 5110)]