81281718

素因数分解:

$2^1\times 3^4\times 7^1\times {\mathrm{229}}^1\times {\mathrm{313}}^1$

素因数の和:563

約数の個数: 80

約数和(自身を含む): 209726880

約数和(自身を除く): 128445162

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 81, 126, 162, 189, 229, 313, 378, 458, 567, 626, 687, 939, 1134, 1374, 1603, 1878, 2061, 2191, 2817, 3206, 4122, 4382, 4809, 5634, 6183, 6573, 8451, 9618, 12366, 13146, 14427, 16902, 18549, 19719, 25353, 28854, 37098, 39438, 43281, 50706, 59157, 71677, 86562, 118314, 129843, 143354, 177471, 215031, 259686, 354942, 430062, 501739, 645093, 1003478, 1290186, 1505217, 1935279, 3010434, 3870558, 4515651, 5805837, 9031302, 11611674, 13546953, 27093906, 40640859, 81281718]

約数ペア:

[(1, 81281718), (2, 40640859), (3, 27093906), (6, 13546953), (7, 11611674), (9, 9031302), (14, 5805837), (18, 4515651), (21, 3870558), (27, 3010434), (42, 1935279), (54, 1505217), (63, 1290186), (81, 1003478), (126, 645093), (162, 501739), (189, 430062), (229, 354942), (313, 259686), (378, 215031), (458, 177471), (567, 143354), (626, 129843), (687, 118314), (939, 86562), (1134, 71677), (1374, 59157), (1603, 50706), (1878, 43281), (2061, 39438), (2191, 37098), (2817, 28854), (3206, 25353), (4122, 19719), (4382, 18549), (4809, 16902), (5634, 14427), (6183, 13146), (6573, 12366), (8451, 9618)]