21757195

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{359}}^1$

素因数の和:435

約数の個数: 32

約数和(自身を含む): 29859840

約数和(自身を除く): 8102645

約数列:

[1, 5, 17, 23, 31, 85, 115, 155, 359, 391, 527, 713, 1795, 1955, 2635, 3565, 6103, 8257, 11129, 12121, 30515, 41285, 55645, 60605, 140369, 189193, 255967, 701845, 945965, 1279835, 4351439, 21757195]

約数ペア:

[(1, 21757195), (5, 4351439), (17, 1279835), (23, 945965), (31, 701845), (85, 255967), (115, 189193), (155, 140369), (359, 60605), (391, 55645), (527, 41285), (713, 30515), (1795, 12121), (1955, 11129), (2635, 8257), (3565, 6103)]