21804115

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{587}}^1$

素因数の和:651

約数の個数: 32

約数和(自身を含む): 30481920

約数和(自身を除く): 8677805

約数列:

[1, 5, 17, 19, 23, 85, 95, 115, 323, 391, 437, 587, 1615, 1955, 2185, 2935, 7429, 9979, 11153, 13501, 37145, 49895, 55765, 67505, 189601, 229517, 256519, 948005, 1147585, 1282595, 4360823, 21804115]

約数ペア:

[(1, 21804115), (5, 4360823), (17, 1282595), (19, 1147585), (23, 948005), (85, 256519), (95, 229517), (115, 189601), (323, 67505), (391, 55765), (437, 49895), (587, 37145), (1615, 13501), (1955, 11153), (2185, 9979), (2935, 7429)]