20161279980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{239}}^1\times {\mathrm{661}}^1\times {\mathrm{709}}^1$

素因数の和:1624

約数の個数: 144

約数和(自身を含む): 61591420800

約数和(自身を除く): 41430140820

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 239, 478, 661, 709, 717, 956, 1195, 1322, 1418, 1434, 1983, 2127, 2151, 2390, 2644, 2836, 2868, 3305, 3545, 3585, 3966, 4254, 4302, 4780, 5949, 6381, 6610, 7090, 7170, 7932, 8508, 8604, 9915, 10635, 10755, 11898, 12762, 13220, 14180, 14340, 19830, 21270, 21510, 23796, 25524, 29745, 31905, 39660, 42540, 43020, 59490, 63810, 118980, 127620, 157979, 169451, 315958, 338902, 468649, 473937, 508353, 631916, 677804, 789895, 847255, 937298, 947874, 1016706, 1405947, 1421811, 1525059, 1579790, 1694510, 1874596, 1895748, 2033412, 2343245, 2369685, 2541765, 2811894, 2843622, 3050118, 3159580, 3389020, 4217841, 4686490, 4739370, 5083530, 5623788, 5687244, 6100236, 7029735, 7109055, 7625295, 8435682, 9372980, 9478740, 10167060, 14059470, 14218110, 15250590, 16871364, 21089205, 28118940, 28436220, 30501180, 42178410, 84356820, 112007111, 224014222, 336021333, 448028444, 560035555, 672042666, 1008063999, 1120071110, 1344085332, 1680106665, 2016127998, 2240142220, 3360213330, 4032255996, 5040319995, 6720426660, 10080639990, 20161279980]

約数ペア:

[(1, 20161279980), (2, 10080639990), (3, 6720426660), (4, 5040319995), (5, 4032255996), (6, 3360213330), (9, 2240142220), (10, 2016127998), (12, 1680106665), (15, 1344085332), (18, 1120071110), (20, 1008063999), (30, 672042666), (36, 560035555), (45, 448028444), (60, 336021333), (90, 224014222), (180, 112007111), (239, 84356820), (478, 42178410), (661, 30501180), (709, 28436220), (717, 28118940), (956, 21089205), (1195, 16871364), (1322, 15250590), (1418, 14218110), (1434, 14059470), (1983, 10167060), (2127, 9478740), (2151, 9372980), (2390, 8435682), (2644, 7625295), (2836, 7109055), (2868, 7029735), (3305, 6100236), (3545, 5687244), (3585, 5623788), (3966, 5083530), (4254, 4739370), (4302, 4686490), (4780, 4217841), (5949, 3389020), (6381, 3159580), (6610, 3050118), (7090, 2843622), (7170, 2811894), (7932, 2541765), (8508, 2369685), (8604, 2343245), (9915, 2033412), (10635, 1895748), (10755, 1874596), (11898, 1694510), (12762, 1579790), (13220, 1525059), (14180, 1421811), (14340, 1405947), (19830, 1016706), (21270, 947874), (21510, 937298), (23796, 847255), (25524, 789895), (29745, 677804), (31905, 631916), (39660, 508353), (42540, 473937), (43020, 468649), (59490, 338902), (63810, 315958), (118980, 169451), (127620, 157979)]