278300169

素因数分解:

$3^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{163}}^1\times {\mathrm{661}}^1$

素因数の和:878

約数の個数: 48

約数和(自身を含む): 474225024

約数和(自身を除く): 195924855

約数列:

[1, 3, 7, 9, 21, 41, 63, 123, 163, 287, 369, 489, 661, 861, 1141, 1467, 1983, 2583, 3423, 4627, 5949, 6683, 10269, 13881, 20049, 27101, 41643, 46781, 60147, 81303, 107743, 140343, 189707, 243909, 323229, 421029, 569121, 754201, 969687, 1707363, 2262603, 4417463, 6787809, 13252389, 30922241, 39757167, 92766723, 278300169]

約数ペア:

[(1, 278300169), (3, 92766723), (7, 39757167), (9, 30922241), (21, 13252389), (41, 6787809), (63, 4417463), (123, 2262603), (163, 1707363), (287, 969687), (369, 754201), (489, 569121), (661, 421029), (861, 323229), (1141, 243909), (1467, 189707), (1983, 140343), (2583, 107743), (3423, 81303), (4627, 60147), (5949, 46781), (6683, 41643), (10269, 27101), (13881, 20049)]