21272565

素因数分解:

$3^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{19427}}^1$

素因数の和:19508

約数の個数: 16

約数和(自身を含む): 34504128

約数和(自身を除く): 13231563

約数列:

[1, 3, 5, 15, 73, 219, 365, 1095, 19427, 58281, 97135, 291405, 1418171, 4254513, 7090855, 21272565]

約数ペア:

[(1, 21272565), (3, 7090855), (5, 4254513), (15, 1418171), (73, 291405), (219, 97135), (365, 58281), (1095, 19427)]