20731750

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{6379}}^1$

素因数の和:6409

約数の個数: 32

約数和(自身を含む): 41801760

約数和(自身を除く): 21070010

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 250, 325, 650, 1625, 3250, 6379, 12758, 31895, 63790, 82927, 159475, 165854, 318950, 414635, 797375, 829270, 1594750, 2073175, 4146350, 10365875, 20731750]

約数ペア:

[(1, 20731750), (2, 10365875), (5, 4146350), (10, 2073175), (13, 1594750), (25, 829270), (26, 797375), (50, 414635), (65, 318950), (125, 165854), (130, 159475), (250, 82927), (325, 63790), (650, 31895), (1625, 12758), (3250, 6379)]