20123680

素因数分解:

$2^5\times 5^1\times {\mathrm{29}}^1\times {\mathrm{4337}}^1$

素因数の和:4381

約数の個数: 48

約数和(自身を含む): 49192920

約数和(自身を除く): 29069240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 80, 116, 145, 160, 232, 290, 464, 580, 928, 1160, 2320, 4337, 4640, 8674, 17348, 21685, 34696, 43370, 69392, 86740, 125773, 138784, 173480, 251546, 346960, 503092, 628865, 693920, 1006184, 1257730, 2012368, 2515460, 4024736, 5030920, 10061840, 20123680]

約数ペア:

[(1, 20123680), (2, 10061840), (4, 5030920), (5, 4024736), (8, 2515460), (10, 2012368), (16, 1257730), (20, 1006184), (29, 693920), (32, 628865), (40, 503092), (58, 346960), (80, 251546), (116, 173480), (145, 138784), (160, 125773), (232, 86740), (290, 69392), (464, 43370), (580, 34696), (928, 21685), (1160, 17348), (2320, 8674), (4337, 4640)]