81426828

素因数分解:

$2^2\times 3^1\times 7^3\times {\mathrm{73}}^1\times {\mathrm{271}}^1$

素因数の和:372

約数の個数: 96

約数和(自身を含む): 225433600

約数和(自身を除く): 144006772

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 73, 84, 98, 146, 147, 196, 219, 271, 292, 294, 343, 438, 511, 542, 588, 686, 813, 876, 1022, 1029, 1084, 1372, 1533, 1626, 1897, 2044, 2058, 3066, 3252, 3577, 3794, 4116, 5691, 6132, 7154, 7588, 10731, 11382, 13279, 14308, 19783, 21462, 22764, 25039, 26558, 39566, 39837, 42924, 50078, 53116, 59349, 75117, 79132, 79674, 92953, 100156, 118698, 138481, 150234, 159348, 185906, 237396, 276962, 278859, 300468, 371812, 415443, 553924, 557718, 830886, 969367, 1115436, 1661772, 1938734, 2908101, 3877468, 5816202, 6785569, 11632404, 13571138, 20356707, 27142276, 40713414, 81426828]

約数ペア:

[(1, 81426828), (2, 40713414), (3, 27142276), (4, 20356707), (6, 13571138), (7, 11632404), (12, 6785569), (14, 5816202), (21, 3877468), (28, 2908101), (42, 1938734), (49, 1661772), (73, 1115436), (84, 969367), (98, 830886), (146, 557718), (147, 553924), (196, 415443), (219, 371812), (271, 300468), (292, 278859), (294, 276962), (343, 237396), (438, 185906), (511, 159348), (542, 150234), (588, 138481), (686, 118698), (813, 100156), (876, 92953), (1022, 79674), (1029, 79132), (1084, 75117), (1372, 59349), (1533, 53116), (1626, 50078), (1897, 42924), (2044, 39837), (2058, 39566), (3066, 26558), (3252, 25039), (3577, 22764), (3794, 21462), (4116, 19783), (5691, 14308), (6132, 13279), (7154, 11382), (7588, 10731)]