19778276

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{1123}}^1$

素因数の和:1188

約数の個数: 48

約数和(自身を含む): 43053696

約数和(自身を除く): 23275420

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 37, 68, 74, 119, 148, 238, 259, 476, 518, 629, 1036, 1123, 1258, 2246, 2516, 4403, 4492, 7861, 8806, 15722, 17612, 19091, 31444, 38182, 41551, 76364, 83102, 133637, 166204, 267274, 290857, 534548, 581714, 706367, 1163428, 1412734, 2825468, 4944569, 9889138, 19778276]

約数ペア:

[(1, 19778276), (2, 9889138), (4, 4944569), (7, 2825468), (14, 1412734), (17, 1163428), (28, 706367), (34, 581714), (37, 534548), (68, 290857), (74, 267274), (119, 166204), (148, 133637), (238, 83102), (259, 76364), (476, 41551), (518, 38182), (629, 31444), (1036, 19091), (1123, 17612), (1258, 15722), (2246, 8806), (2516, 7861), (4403, 4492)]