20165745

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{173}}^1\times {\mathrm{409}}^1$

素因数の和:609

約数の個数: 32

約数和(自身を含む): 34243200

約数和(自身を除く): 14077455

約数列:

[1, 3, 5, 15, 19, 57, 95, 173, 285, 409, 519, 865, 1227, 2045, 2595, 3287, 6135, 7771, 9861, 16435, 23313, 38855, 49305, 70757, 116565, 212271, 353785, 1061355, 1344383, 4033149, 6721915, 20165745]

約数ペア:

[(1, 20165745), (3, 6721915), (5, 4033149), (15, 1344383), (19, 1061355), (57, 353785), (95, 212271), (173, 116565), (285, 70757), (409, 49305), (519, 38855), (865, 23313), (1227, 16435), (2045, 9861), (2595, 7771), (3287, 6135)]