22078820

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{239}}^1$

素因数の和:428

約数の個数: 48

約数和(自身を含む): 48384000

約数和(自身を除く): 26305180

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 149, 155, 239, 298, 310, 478, 596, 620, 745, 956, 1195, 1490, 2390, 2980, 4619, 4780, 7409, 9238, 14818, 18476, 23095, 29636, 35611, 37045, 46190, 71222, 74090, 92380, 142444, 148180, 178055, 356110, 712220, 1103941, 2207882, 4415764, 5519705, 11039410, 22078820]

約数ペア:

[(1, 22078820), (2, 11039410), (4, 5519705), (5, 4415764), (10, 2207882), (20, 1103941), (31, 712220), (62, 356110), (124, 178055), (149, 148180), (155, 142444), (239, 92380), (298, 74090), (310, 71222), (478, 46190), (596, 37045), (620, 35611), (745, 29636), (956, 23095), (1195, 18476), (1490, 14818), (2390, 9238), (2980, 7409), (4619, 4780)]