20246915

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{251}}^1$

素因数の和:359

約数の個数: 32

約数和(自身を含む): 28195776

約数和(自身を除く): 7948861

約数列:

[1, 5, 13, 17, 65, 73, 85, 221, 251, 365, 949, 1105, 1241, 1255, 3263, 4267, 4745, 6205, 16133, 16315, 18323, 21335, 55471, 80665, 91615, 238199, 277355, 311491, 1190995, 1557455, 4049383, 20246915]

約数ペア:

[(1, 20246915), (5, 4049383), (13, 1557455), (17, 1190995), (65, 311491), (73, 277355), (85, 238199), (221, 91615), (251, 80665), (365, 55471), (949, 21335), (1105, 18323), (1241, 16315), (1255, 16133), (3263, 6205), (4267, 4745)]