20131785

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{367}}^1$

素因数の和:454

約数の個数: 48

約数和(自身を含む): 37200384

約数和(自身を除く): 17068599

約数列:

[1, 3, 5, 9, 15, 23, 45, 53, 69, 115, 159, 207, 265, 345, 367, 477, 795, 1035, 1101, 1219, 1835, 2385, 3303, 3657, 5505, 6095, 8441, 10971, 16515, 18285, 19451, 25323, 42205, 54855, 58353, 75969, 97255, 126615, 175059, 291765, 379845, 447373, 875295, 1342119, 2236865, 4026357, 6710595, 20131785]

約数ペア:

[(1, 20131785), (3, 6710595), (5, 4026357), (9, 2236865), (15, 1342119), (23, 875295), (45, 447373), (53, 379845), (69, 291765), (115, 175059), (159, 126615), (207, 97255), (265, 75969), (345, 58353), (367, 54855), (477, 42205), (795, 25323), (1035, 19451), (1101, 18285), (1219, 16515), (1835, 10971), (2385, 8441), (3303, 6095), (3657, 5505)]