21931559

素因数分解:

${\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{139}}^1\times {\mathrm{229}}^1$

素因数の和:434

約数の個数: 16

約数和(自身を含む): 24343200

約数和(自身を除く): 2411641

約数列:

[1, 13, 53, 139, 229, 689, 1807, 2977, 7367, 12137, 31831, 95771, 157781, 413803, 1687043, 21931559]

約数ペア:

[(1, 21931559), (13, 1687043), (53, 413803), (139, 157781), (229, 95771), (689, 31831), (1807, 12137), (2977, 7367)]