78238881

素因数分解:

$3^2\times 7^1\times {\mathrm{223}}^1\times {\mathrm{5569}}^1$

素因数の和:5805

約数の個数: 24

約数和(自身を含む): 129758720

約数和(自身を除く): 51519839

約数列:

[1, 3, 7, 9, 21, 63, 223, 669, 1561, 2007, 4683, 5569, 14049, 16707, 38983, 50121, 116949, 350847, 1241887, 3725661, 8693209, 11176983, 26079627, 78238881]

約数ペア:

[(1, 78238881), (3, 26079627), (7, 11176983), (9, 8693209), (21, 3725661), (63, 1241887), (223, 350847), (669, 116949), (1561, 50121), (2007, 38983), (4683, 16707), (5569, 14049)]