21111795

素因数分解:

$3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{7691}}^1$

素因数の和:7763

約数の個数: 24

約数和(自身を含む): 37198512

約数和(自身を除く): 16086717

約数列:

[1, 3, 5, 9, 15, 45, 61, 183, 305, 549, 915, 2745, 7691, 23073, 38455, 69219, 115365, 346095, 469151, 1407453, 2345755, 4222359, 7037265, 21111795]

約数ペア:

[(1, 21111795), (3, 7037265), (5, 4222359), (9, 2345755), (15, 1407453), (45, 469151), (61, 346095), (183, 115365), (305, 69219), (549, 38455), (915, 23073), (2745, 7691)]