259940

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{317}}^1$

素因数の和:367

約数の個数: 24

約数和(自身を含む): 560952

約数和(自身を除く): 301012

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 317, 410, 634, 820, 1268, 1585, 3170, 6340, 12997, 25994, 51988, 64985, 129970, 259940]

約数ペア:

[(1, 259940), (2, 129970), (4, 64985), (5, 51988), (10, 25994), (20, 12997), (41, 6340), (82, 3170), (164, 1585), (205, 1268), (317, 820), (410, 634)]