21781159015

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{4091}}^1\times {\mathrm{13829}}^1$

素因数の和:17943

約数の個数: 32

約数和(自身を含む): 32597199360

約数和(自身を除く): 10816040345

約数列:

[1, 5, 7, 11, 35, 55, 77, 385, 4091, 13829, 20455, 28637, 45001, 69145, 96803, 143185, 152119, 225005, 315007, 484015, 760595, 1064833, 1575035, 5324165, 56574439, 282872195, 396021073, 622318829, 1980105365, 3111594145, 4356231803, 21781159015]

約数ペア:

[(1, 21781159015), (5, 4356231803), (7, 3111594145), (11, 1980105365), (35, 622318829), (55, 396021073), (77, 282872195), (385, 56574439), (4091, 5324165), (13829, 1575035), (20455, 1064833), (28637, 760595), (45001, 484015), (69145, 315007), (96803, 225005), (143185, 152119)]