21566080

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1087}}^1$

素因数の和:1137

約数の個数: 64

約数和(自身を含む): 53268480

約数和(自身を除く): 31702400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 496, 620, 640, 992, 1087, 1240, 1984, 2174, 2480, 3968, 4348, 4960, 5435, 8696, 9920, 10870, 17392, 19840, 21740, 33697, 34784, 43480, 67394, 69568, 86960, 134788, 139136, 168485, 173920, 269576, 336970, 347840, 539152, 673940, 695680, 1078304, 1347880, 2156608, 2695760, 4313216, 5391520, 10783040, 21566080]

約数ペア:

[(1, 21566080), (2, 10783040), (4, 5391520), (5, 4313216), (8, 2695760), (10, 2156608), (16, 1347880), (20, 1078304), (31, 695680), (32, 673940), (40, 539152), (62, 347840), (64, 336970), (80, 269576), (124, 173920), (128, 168485), (155, 139136), (160, 134788), (248, 86960), (310, 69568), (320, 67394), (496, 43480), (620, 34784), (640, 33697), (992, 21740), (1087, 19840), (1240, 17392), (1984, 10870), (2174, 9920), (2480, 8696), (3968, 5435), (4348, 4960)]