18671920

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{7529}}^1$

素因数の和:7573

約数の個数: 40

約数和(自身を含む): 44818560

約数和(自身を除く): 26146640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 7529, 15058, 30116, 37645, 60232, 75290, 120464, 150580, 233399, 301160, 466798, 602320, 933596, 1166995, 1867192, 2333990, 3734384, 4667980, 9335960, 18671920]

約数ペア:

[(1, 18671920), (2, 9335960), (4, 4667980), (5, 3734384), (8, 2333990), (10, 1867192), (16, 1166995), (20, 933596), (31, 602320), (40, 466798), (62, 301160), (80, 233399), (124, 150580), (155, 120464), (248, 75290), (310, 60232), (496, 37645), (620, 30116), (1240, 15058), (2480, 7529)]