80668640

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{38783}}^1$

素因数の和:38811

約数の個数: 48

約数和(自身を含む): 205244928

約数和(自身を除く): 124576288

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 38783, 77566, 155132, 193915, 310264, 387830, 504179, 620528, 775660, 1008358, 1241056, 1551320, 2016716, 2520895, 3102640, 4033432, 5041790, 6205280, 8066864, 10083580, 16133728, 20167160, 40334320, 80668640]

約数ペア:

[(1, 80668640), (2, 40334320), (4, 20167160), (5, 16133728), (8, 10083580), (10, 8066864), (13, 6205280), (16, 5041790), (20, 4033432), (26, 3102640), (32, 2520895), (40, 2016716), (52, 1551320), (65, 1241056), (80, 1008358), (104, 775660), (130, 620528), (160, 504179), (208, 387830), (260, 310264), (416, 193915), (520, 155132), (1040, 77566), (2080, 38783)]