20163211760

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{181}}^1\times {\mathrm{811}}^1$

素因数の和:1123

約数の個数: 160

約数和(自身を含む): 50467644864

約数和(自身を除く): 30304433104

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 101, 136, 170, 181, 202, 272, 340, 362, 404, 505, 680, 724, 808, 811, 905, 1010, 1360, 1448, 1616, 1622, 1717, 1810, 2020, 2896, 3077, 3244, 3434, 3620, 4040, 4055, 6154, 6488, 6868, 7240, 8080, 8110, 8585, 12308, 12976, 13736, 13787, 14480, 15385, 16220, 17170, 18281, 24616, 27472, 27574, 30770, 32440, 34340, 36562, 49232, 55148, 61540, 64880, 68680, 68935, 73124, 81911, 91405, 110296, 123080, 137360, 137870, 146248, 146791, 163822, 182810, 220592, 246160, 275740, 292496, 293582, 310777, 327644, 365620, 409555, 551480, 587164, 621554, 655288, 731240, 733955, 819110, 1102960, 1174328, 1243108, 1310576, 1392487, 1462480, 1467910, 1553885, 1638220, 2348656, 2486216, 2495447, 2784974, 2935820, 3107770, 3276440, 4972432, 4990894, 5569948, 5871640, 6215540, 6552880, 6962435, 9981788, 11139896, 11743280, 12431080, 12477235, 13924870, 14825891, 19963576, 22279792, 24862160, 24954470, 27849740, 29651782, 39927152, 49908940, 55699480, 59303564, 74129455, 99817880, 111398960, 118607128, 148258910, 199635760, 237214256, 252040147, 296517820, 504080294, 593035640, 1008160588, 1186071280, 1260200735, 2016321176, 2520401470, 4032642352, 5040802940, 10081605880, 20163211760]

約数ペア:

[(1, 20163211760), (2, 10081605880), (4, 5040802940), (5, 4032642352), (8, 2520401470), (10, 2016321176), (16, 1260200735), (17, 1186071280), (20, 1008160588), (34, 593035640), (40, 504080294), (68, 296517820), (80, 252040147), (85, 237214256), (101, 199635760), (136, 148258910), (170, 118607128), (181, 111398960), (202, 99817880), (272, 74129455), (340, 59303564), (362, 55699480), (404, 49908940), (505, 39927152), (680, 29651782), (724, 27849740), (808, 24954470), (811, 24862160), (905, 22279792), (1010, 19963576), (1360, 14825891), (1448, 13924870), (1616, 12477235), (1622, 12431080), (1717, 11743280), (1810, 11139896), (2020, 9981788), (2896, 6962435), (3077, 6552880), (3244, 6215540), (3434, 5871640), (3620, 5569948), (4040, 4990894), (4055, 4972432), (6154, 3276440), (6488, 3107770), (6868, 2935820), (7240, 2784974), (8080, 2495447), (8110, 2486216), (8585, 2348656), (12308, 1638220), (12976, 1553885), (13736, 1467910), (13787, 1462480), (14480, 1392487), (15385, 1310576), (16220, 1243108), (17170, 1174328), (18281, 1102960), (24616, 819110), (27472, 733955), (27574, 731240), (30770, 655288), (32440, 621554), (34340, 587164), (36562, 551480), (49232, 409555), (55148, 365620), (61540, 327644), (64880, 310777), (68680, 293582), (68935, 292496), (73124, 275740), (81911, 246160), (91405, 220592), (110296, 182810), (123080, 163822), (137360, 146791), (137870, 146248)]