21205995

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{2011}}^1$

素因数の和:2075

約数の個数: 32

約数和(自身を含む): 36698880

約数和(自身を除く): 15492885

約数列:

[1, 3, 5, 15, 19, 37, 57, 95, 111, 185, 285, 555, 703, 2011, 2109, 3515, 6033, 10055, 10545, 30165, 38209, 74407, 114627, 191045, 223221, 372035, 573135, 1116105, 1413733, 4241199, 7068665, 21205995]

約数ペア:

[(1, 21205995), (3, 7068665), (5, 4241199), (15, 1413733), (19, 1116105), (37, 573135), (57, 372035), (95, 223221), (111, 191045), (185, 114627), (285, 74407), (555, 38209), (703, 30165), (2011, 10545), (2109, 10055), (3515, 6033)]