18220120

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{113}}^1\times {\mathrm{139}}^1$

素因数の和:292

約数の個数: 64

約数和(自身を含む): 43092000

約数和(自身を除く): 24871880

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 113, 116, 139, 145, 226, 232, 278, 290, 452, 556, 565, 580, 695, 904, 1112, 1130, 1160, 1390, 2260, 2780, 3277, 4031, 4520, 5560, 6554, 8062, 13108, 15707, 16124, 16385, 20155, 26216, 31414, 32248, 32770, 40310, 62828, 65540, 78535, 80620, 125656, 131080, 157070, 161240, 314140, 455503, 628280, 911006, 1822012, 2277515, 3644024, 4555030, 9110060, 18220120]

約数ペア:

[(1, 18220120), (2, 9110060), (4, 4555030), (5, 3644024), (8, 2277515), (10, 1822012), (20, 911006), (29, 628280), (40, 455503), (58, 314140), (113, 161240), (116, 157070), (139, 131080), (145, 125656), (226, 80620), (232, 78535), (278, 65540), (290, 62828), (452, 40310), (556, 32770), (565, 32248), (580, 31414), (695, 26216), (904, 20155), (1112, 16385), (1130, 16124), (1160, 15707), (1390, 13108), (2260, 8062), (2780, 6554), (3277, 5560), (4031, 4520)]