21125295

素因数分解:

$3^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{2383}}^1$

素因数の和:2591

約数の個数: 24

約数和(自身を含む): 36818496

約数和(自身を除く): 15693201

約数列:

[1, 3, 5, 9, 15, 45, 197, 591, 985, 1773, 2383, 2955, 7149, 8865, 11915, 21447, 35745, 107235, 469451, 1408353, 2347255, 4225059, 7041765, 21125295]

約数ペア:

[(1, 21125295), (3, 7041765), (5, 4225059), (9, 2347255), (15, 1408353), (45, 469451), (197, 107235), (591, 35745), (985, 21447), (1773, 11915), (2383, 8865), (2955, 7149)]