12940720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{541}}^1$

素因数の和:590

約数の個数: 80

約数和(自身を含む): 33872832

約数和(自身を除く): 20932112

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 26, 40, 46, 52, 65, 80, 92, 104, 115, 130, 184, 208, 230, 260, 299, 368, 460, 520, 541, 598, 920, 1040, 1082, 1196, 1495, 1840, 2164, 2392, 2705, 2990, 4328, 4784, 5410, 5980, 7033, 8656, 10820, 11960, 12443, 14066, 21640, 23920, 24886, 28132, 35165, 43280, 49772, 56264, 62215, 70330, 99544, 112528, 124430, 140660, 161759, 199088, 248860, 281320, 323518, 497720, 562640, 647036, 808795, 995440, 1294072, 1617590, 2588144, 3235180, 6470360, 12940720]

約数ペア:

[(1, 12940720), (2, 6470360), (4, 3235180), (5, 2588144), (8, 1617590), (10, 1294072), (13, 995440), (16, 808795), (20, 647036), (23, 562640), (26, 497720), (40, 323518), (46, 281320), (52, 248860), (65, 199088), (80, 161759), (92, 140660), (104, 124430), (115, 112528), (130, 99544), (184, 70330), (208, 62215), (230, 56264), (260, 49772), (299, 43280), (368, 35165), (460, 28132), (520, 24886), (541, 23920), (598, 21640), (920, 14066), (1040, 12443), (1082, 11960), (1196, 10820), (1495, 8656), (1840, 7033), (2164, 5980), (2392, 5410), (2705, 4784), (2990, 4328)]