28027620

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1$

素因数の和:176

約数の個数: 144

約数和(自身を含む): 90504960

約数和(自身を除く): 62477340

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 73, 79, 81, 90, 108, 135, 146, 158, 162, 180, 219, 237, 243, 270, 292, 316, 324, 365, 395, 405, 438, 474, 486, 540, 657, 711, 730, 790, 810, 876, 948, 972, 1095, 1185, 1215, 1314, 1422, 1460, 1580, 1620, 1971, 2133, 2190, 2370, 2430, 2628, 2844, 3285, 3555, 3942, 4266, 4380, 4740, 4860, 5767, 5913, 6399, 6570, 7110, 7884, 8532, 9855, 10665, 11534, 11826, 12798, 13140, 14220, 17301, 17739, 19197, 19710, 21330, 23068, 23652, 25596, 28835, 29565, 31995, 34602, 35478, 38394, 39420, 42660, 51903, 57670, 59130, 63990, 69204, 70956, 76788, 86505, 88695, 95985, 103806, 115340, 118260, 127980, 155709, 173010, 177390, 191970, 207612, 259515, 311418, 346020, 354780, 383940, 467127, 519030, 622836, 778545, 934254, 1038060, 1401381, 1557090, 1868508, 2335635, 2802762, 3114180, 4671270, 5605524, 7006905, 9342540, 14013810, 28027620]

約数ペア:

[(1, 28027620), (2, 14013810), (3, 9342540), (4, 7006905), (5, 5605524), (6, 4671270), (9, 3114180), (10, 2802762), (12, 2335635), (15, 1868508), (18, 1557090), (20, 1401381), (27, 1038060), (30, 934254), (36, 778545), (45, 622836), (54, 519030), (60, 467127), (73, 383940), (79, 354780), (81, 346020), (90, 311418), (108, 259515), (135, 207612), (146, 191970), (158, 177390), (162, 173010), (180, 155709), (219, 127980), (237, 118260), (243, 115340), (270, 103806), (292, 95985), (316, 88695), (324, 86505), (365, 76788), (395, 70956), (405, 69204), (438, 63990), (474, 59130), (486, 57670), (540, 51903), (657, 42660), (711, 39420), (730, 38394), (790, 35478), (810, 34602), (876, 31995), (948, 29565), (972, 28835), (1095, 25596), (1185, 23652), (1215, 23068), (1314, 21330), (1422, 19710), (1460, 19197), (1580, 17739), (1620, 17301), (1971, 14220), (2133, 13140), (2190, 12798), (2370, 11826), (2430, 11534), (2628, 10665), (2844, 9855), (3285, 8532), (3555, 7884), (3942, 7110), (4266, 6570), (4380, 6399), (4740, 5913), (4860, 5767)]