20996948983920

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{127}}^1\times {\mathrm{157}}^1\times {\mathrm{3709}}^1$

素因数の和:4042

約数の個数: 960

約数和(自身を含む): 81725009264640

約数和(自身を除く): 60728060280720

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 16, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 48, 52, 56, 60, 65, 70, 78, 80, 84, 91, 104, 105, 112, 120, 127, 130, 140, 156, 157, 168, 169, 182, 195, 208, 210, 240, 254, 260, 273, 280, 312, 314, 336, 338, 364, 381, 390, 420, 455, 471, 507, 508, 520, 546, 560, 624, 628, 635, 676, 728, 762, 780, 785, 840, 845, 889, 910, 942, 1014, 1016, 1040, 1092, 1099, 1183, 1256, 1270, 1352, 1365, 1456, 1524, 1560, 1570, 1651, 1680, 1690, 1778, 1820, 1884, 1905, 2028, 2032, 2041, 2184, 2198, 2355, 2366, 2512, 2535, 2540, 2667, 2704, 2730, 3048, 3120, 3140, 3297, 3302, 3380, 3549, 3556, 3640, 3709, 3768, 3810, 4056, 4082, 4368, 4396, 4445, 4710, 4732, 4953, 5070, 5080, 5334, 5460, 5495, 5915, 6096, 6123, 6280, 6594, 6604, 6760, 7098, 7112, 7280, 7418, 7536, 7620, 8112, 8164, 8255, 8792, 8890, 9420, 9464, 9906, 10140, 10160, 10205, 10668, 10920, 10990, 11127, 11557, 11830, 12246, 12560, 13188, 13208, 13335, 13520, 14196, 14224, 14287, 14836, 15240, 16328, 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約数ペア:

[(1, 20996948983920), (2, 10498474491960), (3, 6998982994640), (4, 5249237245980), (5, 4199389796784), (6, 3499491497320), (7, 2999564140560), (8, 2624618622990), (10, 2099694898392), (12, 1749745748660), (13, 1615149921840), (14, 1499782070280), (15, 1399796598928), (16, 1312309311495), (20, 1049847449196), (21, 999854713520), (24, 874872874330), (26, 807574960920), (28, 749891035140), (30, 699898299464), (35, 599912828112), (39, 538383307280), (40, 524923724598), (42, 499927356760), (48, 437436437165), (52, 403787480460), (56, 374945517570), (60, 349949149732), (65, 323029984368), (70, 299956414056), (78, 269191653640), (80, 262461862299), (84, 249963678380), (91, 230735703120), (104, 201893740230), (105, 199970942704), (112, 187472758785), (120, 174974574866), (127, 165330306960), (130, 161514992184), (140, 149978207028), (156, 134595826820), (157, 133738528560), (168, 124981839190), (169, 124242301680), (182, 115367851560), (195, 107676661456), (208, 100946870115), (210, 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