12990128

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{239}}^1$

素因数の和:369

約数の個数: 40

約数和(自身を含む): 26188800

約数和(自身を除く): 13198672

約数列:

[1, 2, 4, 8, 16, 43, 79, 86, 158, 172, 239, 316, 344, 478, 632, 688, 956, 1264, 1912, 3397, 3824, 6794, 10277, 13588, 18881, 20554, 27176, 37762, 41108, 54352, 75524, 82216, 151048, 164432, 302096, 811883, 1623766, 3247532, 6495064, 12990128]

約数ペア:

[(1, 12990128), (2, 6495064), (4, 3247532), (8, 1623766), (16, 811883), (43, 302096), (79, 164432), (86, 151048), (158, 82216), (172, 75524), (239, 54352), (316, 41108), (344, 37762), (478, 27176), (632, 20554), (688, 18881), (956, 13588), (1264, 10277), (1912, 6794), (3397, 3824)]