20168653820

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{367}}^1\times {\mathrm{8011}}^1$

素因数の和:8408

約数の個数: 96

約数和(自身を含む): 49533388800

約数和(自身を除く): 29364734980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 367, 490, 686, 734, 980, 1372, 1468, 1715, 1835, 2569, 3430, 3670, 5138, 6860, 7340, 8011, 10276, 12845, 16022, 17983, 25690, 32044, 35966, 40055, 51380, 56077, 71932, 80110, 89915, 112154, 125881, 160220, 179830, 224308, 251762, 280385, 359660, 392539, 503524, 560770, 629405, 785078, 1121540, 1258810, 1570156, 1962695, 2517620, 2747773, 2940037, 3925390, 5495546, 5880074, 7850780, 10991092, 11760148, 13738865, 14700185, 20580259, 27477730, 29400370, 41160518, 54955460, 58800740, 82321036, 102901295, 144061813, 205802590, 288123626, 411605180, 576247252, 720309065, 1008432691, 1440618130, 2016865382, 2881236260, 4033730764, 5042163455, 10084326910, 20168653820]

約数ペア:

[(1, 20168653820), (2, 10084326910), (4, 5042163455), (5, 4033730764), (7, 2881236260), (10, 2016865382), (14, 1440618130), (20, 1008432691), (28, 720309065), (35, 576247252), (49, 411605180), (70, 288123626), (98, 205802590), (140, 144061813), (196, 102901295), (245, 82321036), (343, 58800740), (367, 54955460), (490, 41160518), (686, 29400370), (734, 27477730), (980, 20580259), (1372, 14700185), (1468, 13738865), (1715, 11760148), (1835, 10991092), (2569, 7850780), (3430, 5880074), (3670, 5495546), (5138, 3925390), (6860, 2940037), (7340, 2747773), (8011, 2517620), (10276, 1962695), (12845, 1570156), (16022, 1258810), (17983, 1121540), (25690, 785078), (32044, 629405), (35966, 560770), (40055, 503524), (51380, 392539), (56077, 359660), (71932, 280385), (80110, 251762), (89915, 224308), (112154, 179830), (125881, 160220)]