20478770

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{8291}}^1$

素因数の和:8330

約数の個数: 32

約数和(自身を含む): 41791680

約数和(自身を除く): 21312910

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 95, 130, 190, 247, 494, 1235, 2470, 8291, 16582, 41455, 82910, 107783, 157529, 215566, 315058, 538915, 787645, 1077830, 1575290, 2047877, 4095754, 10239385, 20478770]

約数ペア:

[(1, 20478770), (2, 10239385), (5, 4095754), (10, 2047877), (13, 1575290), (19, 1077830), (26, 787645), (38, 538915), (65, 315058), (95, 215566), (130, 157529), (190, 107783), (247, 82910), (494, 41455), (1235, 16582), (2470, 8291)]