21801507

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{6143}}^1$

素因数の和:6179

約数の個数: 24

約数和(自身を含む): 35979264

約数和(自身を除く): 14177757

約数列:

[1, 3, 7, 13, 21, 39, 91, 169, 273, 507, 1183, 3549, 6143, 18429, 43001, 79859, 129003, 239577, 559013, 1038167, 1677039, 3114501, 7267169, 21801507]

約数ペア:

[(1, 21801507), (3, 7267169), (7, 3114501), (13, 1677039), (21, 1038167), (39, 559013), (91, 239577), (169, 129003), (273, 79859), (507, 43001), (1183, 18429), (3549, 6143)]