20128778415

素因数分解:

$3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{257}}^1\times {\mathrm{42451}}^1$

素因数の和:42760

約数の個数: 48

約数和(自身を含む): 35880770016

約数和(自身を除く): 15751991601

約数列:

[1, 3, 5, 9, 15, 41, 45, 123, 205, 257, 369, 615, 771, 1285, 1845, 2313, 3855, 10537, 11565, 31611, 42451, 52685, 94833, 127353, 158055, 212255, 382059, 474165, 636765, 1740491, 1910295, 5221473, 8702455, 10909907, 15664419, 26107365, 32729721, 54549535, 78322095, 98189163, 163648605, 447306187, 490945815, 1341918561, 2236530935, 4025755683, 6709592805, 20128778415]

約数ペア:

[(1, 20128778415), (3, 6709592805), (5, 4025755683), (9, 2236530935), (15, 1341918561), (41, 490945815), (45, 447306187), (123, 163648605), (205, 98189163), (257, 78322095), (369, 54549535), (615, 32729721), (771, 26107365), (1285, 15664419), (1845, 10909907), (2313, 8702455), (3855, 5221473), (10537, 1910295), (11565, 1740491), (31611, 636765), (42451, 474165), (52685, 382059), (94833, 212255), (127353, 158055)]