123670640

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{21773}}^1$

素因数の和:21857

約数の個数: 40

約数和(自身を含む): 291597408

約数和(自身を除く): 167926768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 5680, 21773, 43546, 87092, 108865, 174184, 217730, 348368, 435460, 870920, 1545883, 1741840, 3091766, 6183532, 7729415, 12367064, 15458830, 24734128, 30917660, 61835320, 123670640]

約数ペア:

[(1, 123670640), (2, 61835320), (4, 30917660), (5, 24734128), (8, 15458830), (10, 12367064), (16, 7729415), (20, 6183532), (40, 3091766), (71, 1741840), (80, 1545883), (142, 870920), (284, 435460), (355, 348368), (568, 217730), (710, 174184), (1136, 108865), (1420, 87092), (2840, 43546), (5680, 21773)]