21099065

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{283}}^1$

素因数の和:369

約数の個数: 32

約数和(自身を含む): 29008896

約数和(自身を除く): 7909831

約数列:

[1, 5, 13, 31, 37, 65, 155, 185, 283, 403, 481, 1147, 1415, 2015, 2405, 3679, 5735, 8773, 10471, 14911, 18395, 43865, 52355, 74555, 114049, 136123, 324601, 570245, 680615, 1623005, 4219813, 21099065]

約数ペア:

[(1, 21099065), (5, 4219813), (13, 1623005), (31, 680615), (37, 570245), (65, 324601), (155, 136123), (185, 114049), (283, 74555), (403, 52355), (481, 43865), (1147, 18395), (1415, 14911), (2015, 10471), (2405, 8773), (3679, 5735)]