21153886209

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{163}}^1\times {\mathrm{69661}}^1$

素因数の和:69859

約数の個数: 40

約数和(自身を含む): 33176945472

約数和(自身を除く): 12023059263

約数列:

[1, 3, 9, 23, 27, 69, 81, 163, 207, 489, 621, 1467, 1863, 3749, 4401, 11247, 13203, 33741, 69661, 101223, 208983, 303669, 626949, 1602203, 1880847, 4806609, 5642541, 11354743, 14419827, 34064229, 43259481, 102192687, 129778443, 261159089, 306578061, 783477267, 919734183, 2350431801, 7051295403, 21153886209]

約数ペア:

[(1, 21153886209), (3, 7051295403), (9, 2350431801), (23, 919734183), (27, 783477267), (69, 306578061), (81, 261159089), (163, 129778443), (207, 102192687), (489, 43259481), (621, 34064229), (1467, 14419827), (1863, 11354743), (3749, 5642541), (4401, 4806609), (11247, 1880847), (13203, 1602203), (33741, 626949), (69661, 303669), (101223, 208983)]