21757970

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{5399}}^1$

素因数の和:5450

約数の個数: 32

約数和(自身を含む): 43545600

約数和(自身を除く): 21787630

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 5399, 10798, 26995, 53990, 70187, 140374, 167369, 334738, 350935, 701870, 836845, 1673690, 2175797, 4351594, 10878985, 21757970]

約数ペア:

[(1, 21757970), (2, 10878985), (5, 4351594), (10, 2175797), (13, 1673690), (26, 836845), (31, 701870), (62, 350935), (65, 334738), (130, 167369), (155, 140374), (310, 70187), (403, 53990), (806, 26995), (2015, 10798), (4030, 5399)]