21108680

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{7229}}^1$

素因数の和:7313

約数の個数: 32

約数和(自身を含む): 48151800

約数和(自身を除く): 27043120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 7229, 14458, 28916, 36145, 57832, 72290, 144580, 289160, 527717, 1055434, 2110868, 2638585, 4221736, 5277170, 10554340, 21108680]

約数ペア:

[(1, 21108680), (2, 10554340), (4, 5277170), (5, 4221736), (8, 2638585), (10, 2110868), (20, 1055434), (40, 527717), (73, 289160), (146, 144580), (292, 72290), (365, 57832), (584, 36145), (730, 28916), (1460, 14458), (2920, 7229)]