13720720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{167}}^1$

素因数の和:272

約数の個数: 80

約数和(自身を含む): 34997760

約数和(自身を除く): 21277040

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 79, 80, 104, 130, 158, 167, 208, 260, 316, 334, 395, 520, 632, 668, 790, 835, 1027, 1040, 1264, 1336, 1580, 1670, 2054, 2171, 2672, 3160, 3340, 4108, 4342, 5135, 6320, 6680, 8216, 8684, 10270, 10855, 13193, 13360, 16432, 17368, 20540, 21710, 26386, 34736, 41080, 43420, 52772, 65965, 82160, 86840, 105544, 131930, 171509, 173680, 211088, 263860, 343018, 527720, 686036, 857545, 1055440, 1372072, 1715090, 2744144, 3430180, 6860360, 13720720]

約数ペア:

[(1, 13720720), (2, 6860360), (4, 3430180), (5, 2744144), (8, 1715090), (10, 1372072), (13, 1055440), (16, 857545), (20, 686036), (26, 527720), (40, 343018), (52, 263860), (65, 211088), (79, 173680), (80, 171509), (104, 131930), (130, 105544), (158, 86840), (167, 82160), (208, 65965), (260, 52772), (316, 43420), (334, 41080), (395, 34736), (520, 26386), (632, 21710), (668, 20540), (790, 17368), (835, 16432), (1027, 13360), (1040, 13193), (1264, 10855), (1336, 10270), (1580, 8684), (1670, 8216), (2054, 6680), (2171, 6320), (2672, 5135), (3160, 4342), (3340, 4108)]