20451572

素因数分解:

$2^2\times {\mathrm{127}}^2\times {\mathrm{317}}^1$

素因数の和:575

約数の個数: 18

約数和(自身を含む): 36188082

約数和(自身を除く): 15736510

約数列:

[1, 2, 4, 127, 254, 317, 508, 634, 1268, 16129, 32258, 40259, 64516, 80518, 161036, 5112893, 10225786, 20451572]

約数ペア:

[(1, 20451572), (2, 10225786), (4, 5112893), (127, 161036), (254, 80518), (317, 64516), (508, 40259), (634, 32258), (1268, 16129)]