12899120

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{157}}^1$

素因数の和:262

約数の個数: 80

約数和(自身を含む): 32914560

約数和(自身を除く): 20015440

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 79, 80, 104, 130, 157, 158, 208, 260, 314, 316, 395, 520, 628, 632, 785, 790, 1027, 1040, 1256, 1264, 1570, 1580, 2041, 2054, 2512, 3140, 3160, 4082, 4108, 5135, 6280, 6320, 8164, 8216, 10205, 10270, 12403, 12560, 16328, 16432, 20410, 20540, 24806, 32656, 40820, 41080, 49612, 62015, 81640, 82160, 99224, 124030, 161239, 163280, 198448, 248060, 322478, 496120, 644956, 806195, 992240, 1289912, 1612390, 2579824, 3224780, 6449560, 12899120]

約数ペア:

[(1, 12899120), (2, 6449560), (4, 3224780), (5, 2579824), (8, 1612390), (10, 1289912), (13, 992240), (16, 806195), (20, 644956), (26, 496120), (40, 322478), (52, 248060), (65, 198448), (79, 163280), (80, 161239), (104, 124030), (130, 99224), (157, 82160), (158, 81640), (208, 62015), (260, 49612), (314, 41080), (316, 40820), (395, 32656), (520, 24806), (628, 20540), (632, 20410), (785, 16432), (790, 16328), (1027, 12560), (1040, 12403), (1256, 10270), (1264, 10205), (1570, 8216), (1580, 8164), (2041, 6320), (2054, 6280), (2512, 5135), (3140, 4108), (3160, 4082)]