80480860

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{149}}^1\times {\mathrm{239}}^1$

素因数の和:510

約数の個数: 48

約数和(自身を含む): 172368000

約数和(自身を除く): 91887140

約数列:

[1, 2, 4, 5, 10, 20, 113, 149, 226, 239, 298, 452, 478, 565, 596, 745, 956, 1130, 1195, 1490, 2260, 2390, 2980, 4780, 16837, 27007, 33674, 35611, 54014, 67348, 71222, 84185, 108028, 135035, 142444, 168370, 178055, 270070, 336740, 356110, 540140, 712220, 4024043, 8048086, 16096172, 20120215, 40240430, 80480860]

約数ペア:

[(1, 80480860), (2, 40240430), (4, 20120215), (5, 16096172), (10, 8048086), (20, 4024043), (113, 712220), (149, 540140), (226, 356110), (239, 336740), (298, 270070), (452, 178055), (478, 168370), (565, 142444), (596, 135035), (745, 108028), (956, 84185), (1130, 71222), (1195, 67348), (1490, 54014), (2260, 35611), (2390, 33674), (2980, 27007), (4780, 16837)]