21979815

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{10247}}^1$

素因数の和:10279

約数の個数: 32

約数和(自身を含む): 41319936

約数和(自身を除く): 19340121

約数列:

[1, 3, 5, 11, 13, 15, 33, 39, 55, 65, 143, 165, 195, 429, 715, 2145, 10247, 30741, 51235, 112717, 133211, 153705, 338151, 399633, 563585, 666055, 1465321, 1690755, 1998165, 4395963, 7326605, 21979815]

約数ペア:

[(1, 21979815), (3, 7326605), (5, 4395963), (11, 1998165), (13, 1690755), (15, 1465321), (33, 666055), (39, 563585), (55, 399633), (65, 338151), (143, 153705), (165, 133211), (195, 112717), (429, 51235), (715, 30741), (2145, 10247)]