138899995

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{2377}}^1$

素因数の和:2455

約数の個数: 32

約数和(自身を含む): 191761920

約数和(自身を除く): 52861925

約数列:

[1, 5, 13, 29, 31, 65, 145, 155, 377, 403, 899, 1885, 2015, 2377, 4495, 11687, 11885, 30901, 58435, 68933, 73687, 154505, 344665, 368435, 896129, 957931, 2136923, 4480645, 4789655, 10684615, 27779999, 138899995]

約数ペア:

[(1, 138899995), (5, 27779999), (13, 10684615), (29, 4789655), (31, 4480645), (65, 2136923), (145, 957931), (155, 896129), (377, 368435), (403, 344665), (899, 154505), (1885, 73687), (2015, 68933), (2377, 58435), (4495, 30901), (11687, 11885)]