21152665

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{223}}^1\times {\mathrm{311}}^1$

素因数の和:600

約数の個数: 16

約数和(自身を含む): 25998336

約数和(自身を除く): 4845671

約数列:

[1, 5, 61, 223, 305, 311, 1115, 1555, 13603, 18971, 68015, 69353, 94855, 346765, 4230533, 21152665]

約数ペア:

[(1, 21152665), (5, 4230533), (61, 346765), (223, 94855), (305, 69353), (311, 68015), (1115, 18971), (1555, 13603)]