19530920

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{113}}^1\times {\mathrm{149}}^1$

素因数の和:302

約数の個数: 64

約数和(自身を含む): 46170000

約数和(自身を除く): 26639080

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 113, 116, 145, 149, 226, 232, 290, 298, 452, 565, 580, 596, 745, 904, 1130, 1160, 1192, 1490, 2260, 2980, 3277, 4321, 4520, 5960, 6554, 8642, 13108, 16385, 16837, 17284, 21605, 26216, 32770, 33674, 34568, 43210, 65540, 67348, 84185, 86420, 131080, 134696, 168370, 172840, 336740, 488273, 673480, 976546, 1953092, 2441365, 3906184, 4882730, 9765460, 19530920]

約数ペア:

[(1, 19530920), (2, 9765460), (4, 4882730), (5, 3906184), (8, 2441365), (10, 1953092), (20, 976546), (29, 673480), (40, 488273), (58, 336740), (113, 172840), (116, 168370), (145, 134696), (149, 131080), (226, 86420), (232, 84185), (290, 67348), (298, 65540), (452, 43210), (565, 34568), (580, 33674), (596, 32770), (745, 26216), (904, 21605), (1130, 17284), (1160, 16837), (1192, 16385), (1490, 13108), (2260, 8642), (2980, 6554), (3277, 5960), (4321, 4520)]