20289490

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{1609}}^1$

素因数の和:1726

約数の個数: 32

約数和(自身を含む): 39760560

約数和(自身を除く): 19471070

約数列:

[1, 2, 5, 10, 13, 26, 65, 97, 130, 194, 485, 970, 1261, 1609, 2522, 3218, 6305, 8045, 12610, 16090, 20917, 41834, 104585, 156073, 209170, 312146, 780365, 1560730, 2028949, 4057898, 10144745, 20289490]

約数ペア:

[(1, 20289490), (2, 10144745), (5, 4057898), (10, 2028949), (13, 1560730), (26, 780365), (65, 312146), (97, 209170), (130, 156073), (194, 104585), (485, 41834), (970, 20917), (1261, 16090), (1609, 12610), (2522, 8045), (3218, 6305)]