326397520

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{239}}^1\times {\mathrm{397}}^1$

素因数の和:692

約数の個数: 80

約数和(自身を含む): 781735680

約数和(自身を除く): 455338160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 239, 344, 397, 430, 478, 688, 794, 860, 956, 1195, 1588, 1720, 1912, 1985, 2390, 3176, 3440, 3824, 3970, 4780, 6352, 7940, 9560, 10277, 15880, 17071, 19120, 20554, 31760, 34142, 41108, 51385, 68284, 82216, 85355, 94883, 102770, 136568, 164432, 170710, 189766, 205540, 273136, 341420, 379532, 411080, 474415, 682840, 759064, 822160, 948830, 1365680, 1518128, 1897660, 3795320, 4079969, 7590640, 8159938, 16319876, 20399845, 32639752, 40799690, 65279504, 81599380, 163198760, 326397520]

約数ペア:

[(1, 326397520), (2, 163198760), (4, 81599380), (5, 65279504), (8, 40799690), (10, 32639752), (16, 20399845), (20, 16319876), (40, 8159938), (43, 7590640), (80, 4079969), (86, 3795320), (172, 1897660), (215, 1518128), (239, 1365680), (344, 948830), (397, 822160), (430, 759064), (478, 682840), (688, 474415), (794, 411080), (860, 379532), (956, 341420), (1195, 273136), (1588, 205540), (1720, 189766), (1912, 170710), (1985, 164432), (2390, 136568), (3176, 102770), (3440, 94883), (3824, 85355), (3970, 82216), (4780, 68284), (6352, 51385), (7940, 41108), (9560, 34142), (10277, 31760), (15880, 20554), (17071, 19120)]