21133026815

素因数分解:

$5^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{401}}^1\times {\mathrm{2801}}^1$

素因数の和:3331

約数の個数: 32

約数和(自身を含む): 26276752512

約数和(自身を除く): 5143725697

約数列:

[1, 5, 53, 71, 265, 355, 401, 2005, 2801, 3763, 14005, 18815, 21253, 28471, 106265, 142355, 148453, 198871, 742265, 994355, 1123201, 1508963, 5616005, 7544815, 10540163, 52700815, 59529653, 79747271, 297648265, 398736355, 4226605363, 21133026815]

約数ペア:

[(1, 21133026815), (5, 4226605363), (53, 398736355), (71, 297648265), (265, 79747271), (355, 59529653), (401, 52700815), (2005, 10540163), (2801, 7544815), (3763, 5616005), (14005, 1508963), (18815, 1123201), (21253, 994355), (28471, 742265), (106265, 198871), (142355, 148453)]