18608680

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{349}}^1$

素因数の和:434

約数の個数: 64

約数和(自身を含む): 44352000

約数和(自身を除く): 25743320

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 43, 62, 86, 124, 155, 172, 215, 248, 310, 344, 349, 430, 620, 698, 860, 1240, 1333, 1396, 1720, 1745, 2666, 2792, 3490, 5332, 6665, 6980, 10664, 10819, 13330, 13960, 15007, 21638, 26660, 30014, 43276, 53320, 54095, 60028, 75035, 86552, 108190, 120056, 150070, 216380, 300140, 432760, 465217, 600280, 930434, 1860868, 2326085, 3721736, 4652170, 9304340, 18608680]

約数ペア:

[(1, 18608680), (2, 9304340), (4, 4652170), (5, 3721736), (8, 2326085), (10, 1860868), (20, 930434), (31, 600280), (40, 465217), (43, 432760), (62, 300140), (86, 216380), (124, 150070), (155, 120056), (172, 108190), (215, 86552), (248, 75035), (310, 60028), (344, 54095), (349, 53320), (430, 43276), (620, 30014), (698, 26660), (860, 21638), (1240, 15007), (1333, 13960), (1396, 13330), (1720, 10819), (1745, 10664), (2666, 6980), (2792, 6665), (3490, 5332)]