21779485

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{317}}^1$

素因数の和:493

約数の個数: 32

約数和(自身を含む): 32481792

約数和(自身を除く): 10702307

約数列:

[1, 5, 7, 13, 35, 65, 91, 151, 317, 455, 755, 1057, 1585, 1963, 2219, 4121, 5285, 9815, 11095, 13741, 20605, 28847, 47867, 68705, 144235, 239335, 335069, 622271, 1675345, 3111355, 4355897, 21779485]

約数ペア:

[(1, 21779485), (5, 4355897), (7, 3111355), (13, 1675345), (35, 622271), (65, 335069), (91, 239335), (151, 144235), (317, 68705), (455, 47867), (755, 28847), (1057, 20605), (1585, 13741), (1963, 11095), (2219, 9815), (4121, 5285)]