19897016

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{617}}^1$

素因数の和:791

約数の個数: 32

約数和(自身を含む): 38934000

約数和(自身を除く): 19036984

約数列:

[1, 2, 4, 8, 29, 58, 116, 139, 232, 278, 556, 617, 1112, 1234, 2468, 4031, 4936, 8062, 16124, 17893, 32248, 35786, 71572, 85763, 143144, 171526, 343052, 686104, 2487127, 4974254, 9948508, 19897016]

約数ペア:

[(1, 19897016), (2, 9948508), (4, 4974254), (8, 2487127), (29, 686104), (58, 343052), (116, 171526), (139, 143144), (232, 85763), (278, 71572), (556, 35786), (617, 32248), (1112, 17893), (1234, 16124), (2468, 8062), (4031, 4936)]