20156560

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{14821}}^1$

素因数の和:14851

約数の個数: 40

約数和(自身を含む): 49624056

約数和(自身を除く): 29467496

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 14821, 29642, 59284, 74105, 118568, 148210, 237136, 251957, 296420, 503914, 592840, 1007828, 1185680, 1259785, 2015656, 2519570, 4031312, 5039140, 10078280, 20156560]

約数ペア:

[(1, 20156560), (2, 10078280), (4, 5039140), (5, 4031312), (8, 2519570), (10, 2015656), (16, 1259785), (17, 1185680), (20, 1007828), (34, 592840), (40, 503914), (68, 296420), (80, 251957), (85, 237136), (136, 148210), (170, 118568), (272, 74105), (340, 59284), (680, 29642), (1360, 14821)]