639025010

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{158567}}^1$

素因数の和:158618

約数の個数: 32

約数和(自身を含む): 1278692352

約数和(自身を除く): 639667342

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 158567, 317134, 792835, 1585670, 2061371, 4122742, 4915577, 9831154, 10306855, 20613710, 24577885, 49155770, 63902501, 127805002, 319512505, 639025010]

約数ペア:

[(1, 639025010), (2, 319512505), (5, 127805002), (10, 63902501), (13, 49155770), (26, 24577885), (31, 20613710), (62, 10306855), (65, 9831154), (130, 4915577), (155, 4122742), (310, 2061371), (403, 1585670), (806, 792835), (2015, 317134), (4030, 158567)]