20542885

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{173}}^1$

素因数の和:333

約数の個数: 32

約数和(自身を含む): 28864512

約数和(自身を除く): 8321627

約数列:

[1, 5, 11, 17, 55, 85, 127, 173, 187, 635, 865, 935, 1397, 1903, 2159, 2941, 6985, 9515, 10795, 14705, 21971, 23749, 32351, 109855, 118745, 161755, 241681, 373507, 1208405, 1867535, 4108577, 20542885]

約数ペア:

[(1, 20542885), (5, 4108577), (11, 1867535), (17, 1208405), (55, 373507), (85, 241681), (127, 161755), (173, 118745), (187, 109855), (635, 32351), (865, 23749), (935, 21971), (1397, 14705), (1903, 10795), (2159, 9515), (2941, 6985)]