21195495

素因数分解:

$3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{8887}}^1$

素因数の和:8951

約数の個数: 24

約数和(自身を含む): 37436256

約数和(自身を除く): 16240761

約数列:

[1, 3, 5, 9, 15, 45, 53, 159, 265, 477, 795, 2385, 8887, 26661, 44435, 79983, 133305, 399915, 471011, 1413033, 2355055, 4239099, 7065165, 21195495]

約数ペア:

[(1, 21195495), (3, 7065165), (5, 4239099), (9, 2355055), (15, 1413033), (45, 471011), (53, 399915), (159, 133305), (265, 79983), (477, 44435), (795, 26661), (2385, 8887)]