21348117

素因数分解:

$3^4\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1637}}^1$

素因数の和:1679

約数の個数: 40

約数和(自身を含む): 38054016

約数和(自身を除く): 16705899

約数列:

[1, 3, 7, 9, 21, 23, 27, 63, 69, 81, 161, 189, 207, 483, 567, 621, 1449, 1637, 1863, 4347, 4911, 11459, 13041, 14733, 34377, 37651, 44199, 103131, 112953, 132597, 263557, 309393, 338859, 790671, 928179, 1016577, 2372013, 3049731, 7116039, 21348117]

約数ペア:

[(1, 21348117), (3, 7116039), (7, 3049731), (9, 2372013), (21, 1016577), (23, 928179), (27, 790671), (63, 338859), (69, 309393), (81, 263557), (161, 132597), (189, 112953), (207, 103131), (483, 44199), (567, 37651), (621, 34377), (1449, 14733), (1637, 13041), (1863, 11459), (4347, 4911)]