19803405

素因数分解:

$3^1\times 5^1\times {\mathrm{211}}^1\times {\mathrm{6257}}^1$

素因数の和:6476

約数の個数: 16

約数和(自身を含む): 31840704

約数和(自身を除く): 12037299

約数列:

[1, 3, 5, 15, 211, 633, 1055, 3165, 6257, 18771, 31285, 93855, 1320227, 3960681, 6601135, 19803405]

約数ペア:

[(1, 19803405), (3, 6601135), (5, 3960681), (15, 1320227), (211, 93855), (633, 31285), (1055, 18771), (3165, 6257)]