209612390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{4001}}^1$

素因数の和:4065

約数の個数: 48

約数和(自身を含む): 421842816

約数和(自身を除く): 212230426

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 169, 310, 338, 403, 806, 845, 1690, 2015, 4001, 4030, 5239, 8002, 10478, 20005, 26195, 40010, 52013, 52390, 104026, 124031, 248062, 260065, 520130, 620155, 676169, 1240310, 1352338, 1612403, 3224806, 3380845, 6761690, 8062015, 16124030, 20961239, 41922478, 104806195, 209612390]

約数ペア:

[(1, 209612390), (2, 104806195), (5, 41922478), (10, 20961239), (13, 16124030), (26, 8062015), (31, 6761690), (62, 3380845), (65, 3224806), (130, 1612403), (155, 1352338), (169, 1240310), (310, 676169), (338, 620155), (403, 520130), (806, 260065), (845, 248062), (1690, 124031), (2015, 104026), (4001, 52390), (4030, 52013), (5239, 40010), (8002, 26195), (10478, 20005)]