218539775

素因数分解:

$5^2\times {\mathrm{71}}^1\times {\mathrm{123121}}^1$

素因数の和:123202

約数の個数: 12

約数和(自身を含む): 274808304

約数和(自身を除く): 56268529

約数列:

[1, 5, 25, 71, 355, 1775, 123121, 615605, 3078025, 8741591, 43707955, 218539775]

約数ペア:

[(1, 218539775), (5, 43707955), (25, 8741591), (71, 3078025), (355, 615605), (1775, 123121)]