19978686

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{12197}}^1$

素因数の和:12225

約数の個数: 48

約数和(自身を含む): 53280864

約数和(自身を除く): 33302178

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 39, 42, 63, 78, 91, 117, 126, 182, 234, 273, 546, 819, 1638, 12197, 24394, 36591, 73182, 85379, 109773, 158561, 170758, 219546, 256137, 317122, 475683, 512274, 768411, 951366, 1109927, 1427049, 1536822, 2219854, 2854098, 3329781, 6659562, 9989343, 19978686]

約数ペア:

[(1, 19978686), (2, 9989343), (3, 6659562), (6, 3329781), (7, 2854098), (9, 2219854), (13, 1536822), (14, 1427049), (18, 1109927), (21, 951366), (26, 768411), (39, 512274), (42, 475683), (63, 317122), (78, 256137), (91, 219546), (117, 170758), (126, 158561), (182, 109773), (234, 85379), (273, 73182), (546, 36591), (819, 24394), (1638, 12197)]