21065165

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{281}}^1$

素因数の和:373

約数の個数: 32

約数和(自身を含む): 29237760

約数和(自身を除く): 8172595

約数列:

[1, 5, 11, 29, 47, 55, 145, 235, 281, 319, 517, 1363, 1405, 1595, 2585, 3091, 6815, 8149, 13207, 14993, 15455, 40745, 66035, 74965, 89639, 145277, 383003, 448195, 726385, 1915015, 4213033, 21065165]

約数ペア:

[(1, 21065165), (5, 4213033), (11, 1915015), (29, 726385), (47, 448195), (55, 383003), (145, 145277), (235, 89639), (281, 74965), (319, 66035), (517, 40745), (1363, 15455), (1405, 14993), (1595, 13207), (2585, 8149), (3091, 6815)]