21753575

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{1117}}^1$

素因数の和:1187

約数の個数: 24

約数和(自身を含む): 29112720

約数和(自身を除く): 7359145

約数列:

[1, 5, 19, 25, 41, 95, 205, 475, 779, 1025, 1117, 3895, 5585, 19475, 21223, 27925, 45797, 106115, 228985, 530575, 870143, 1144925, 4350715, 21753575]

約数ペア:

[(1, 21753575), (5, 4350715), (19, 1144925), (25, 870143), (41, 530575), (95, 228985), (205, 106115), (475, 45797), (779, 27925), (1025, 21223), (1117, 19475), (3895, 5585)]