20658950

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{859}}^1$

素因数の和:921

約数の個数: 48

約数和(自身を含む): 42549360

約数和(自身を除く): 21890410

約数列:

[1, 2, 5, 10, 13, 25, 26, 37, 50, 65, 74, 130, 185, 325, 370, 481, 650, 859, 925, 962, 1718, 1850, 2405, 4295, 4810, 8590, 11167, 12025, 21475, 22334, 24050, 31783, 42950, 55835, 63566, 111670, 158915, 279175, 317830, 413179, 558350, 794575, 826358, 1589150, 2065895, 4131790, 10329475, 20658950]

約数ペア:

[(1, 20658950), (2, 10329475), (5, 4131790), (10, 2065895), (13, 1589150), (25, 826358), (26, 794575), (37, 558350), (50, 413179), (65, 317830), (74, 279175), (130, 158915), (185, 111670), (325, 63566), (370, 55835), (481, 42950), (650, 31783), (859, 24050), (925, 22334), (962, 21475), (1718, 12025), (1850, 11167), (2405, 8590), (4295, 4810)]