208668440

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{168281}}^1$

素因数の和:168323

約数の個数: 32

約数和(自身を含む): 484652160

約数和(自身を除く): 275983720

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 168281, 336562, 673124, 841405, 1346248, 1682810, 3365620, 5216711, 6731240, 10433422, 20866844, 26083555, 41733688, 52167110, 104334220, 208668440]

約数ペア:

[(1, 208668440), (2, 104334220), (4, 52167110), (5, 41733688), (8, 26083555), (10, 20866844), (20, 10433422), (31, 6731240), (40, 5216711), (62, 3365620), (124, 1682810), (155, 1346248), (248, 841405), (310, 673124), (620, 336562), (1240, 168281)]