18758960

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{21317}}^1$

素因数の和:21341

約数の個数: 40

約数和(自身を含む): 47581776

約数和(自身を除く): 28822816

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 21317, 42634, 85268, 106585, 170536, 213170, 234487, 341072, 426340, 468974, 852680, 937948, 1172435, 1705360, 1875896, 2344870, 3751792, 4689740, 9379480, 18758960]

約数ペア:

[(1, 18758960), (2, 9379480), (4, 4689740), (5, 3751792), (8, 2344870), (10, 1875896), (11, 1705360), (16, 1172435), (20, 937948), (22, 852680), (40, 468974), (44, 426340), (55, 341072), (80, 234487), (88, 213170), (110, 170536), (176, 106585), (220, 85268), (440, 42634), (880, 21317)]