1561983280

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{136537}}^1$

素因数の和:136574

約数の個数: 80

約数和(自身を含む): 4266539424

約数和(自身を除く): 2704556144

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 40, 44, 52, 55, 65, 80, 88, 104, 110, 130, 143, 176, 208, 220, 260, 286, 440, 520, 572, 715, 880, 1040, 1144, 1430, 2288, 2860, 5720, 11440, 136537, 273074, 546148, 682685, 1092296, 1365370, 1501907, 1774981, 2184592, 2730740, 3003814, 3549962, 5461480, 6007628, 7099924, 7509535, 8874905, 10922960, 12015256, 14199848, 15019070, 17749810, 19524791, 24030512, 28399696, 30038140, 35499620, 39049582, 60076280, 70999240, 78099164, 97623955, 120152560, 141998480, 156198328, 195247910, 312396656, 390495820, 780991640, 1561983280]

約数ペア:

[(1, 1561983280), (2, 780991640), (4, 390495820), (5, 312396656), (8, 195247910), (10, 156198328), (11, 141998480), (13, 120152560), (16, 97623955), (20, 78099164), (22, 70999240), (26, 60076280), (40, 39049582), (44, 35499620), (52, 30038140), (55, 28399696), (65, 24030512), (80, 19524791), (88, 17749810), (104, 15019070), (110, 14199848), (130, 12015256), (143, 10922960), (176, 8874905), (208, 7509535), (220, 7099924), (260, 6007628), (286, 5461480), (440, 3549962), (520, 3003814), (572, 2730740), (715, 2184592), (880, 1774981), (1040, 1501907), (1144, 1365370), (1430, 1092296), (2288, 682685), (2860, 546148), (5720, 273074), (11440, 136537)]