209560

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1$

素因数の和:68

約数の個数: 48

約数和(自身を含む): 527040

約数和(自身を除く): 317480

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 155, 169, 248, 260, 310, 338, 403, 520, 620, 676, 806, 845, 1240, 1352, 1612, 1690, 2015, 3224, 3380, 4030, 5239, 6760, 8060, 10478, 16120, 20956, 26195, 41912, 52390, 104780, 209560]

約数ペア:

[(1, 209560), (2, 104780), (4, 52390), (5, 41912), (8, 26195), (10, 20956), (13, 16120), (20, 10478), (26, 8060), (31, 6760), (40, 5239), (52, 4030), (62, 3380), (65, 3224), (104, 2015), (124, 1690), (130, 1612), (155, 1352), (169, 1240), (248, 845), (260, 806), (310, 676), (338, 620), (403, 520)]