68041220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{261697}}^1$

素因数の和:261719

約数の個数: 24

約数和(自身を含む): 153878424

約数和(自身を除く): 85837204

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 261697, 523394, 1046788, 1308485, 2616970, 3402061, 5233940, 6804122, 13608244, 17010305, 34020610, 68041220]

約数ペア:

[(1, 68041220), (2, 34020610), (4, 17010305), (5, 13608244), (10, 6804122), (13, 5233940), (20, 3402061), (26, 2616970), (52, 1308485), (65, 1046788), (130, 523394), (260, 261697)]