20917152

素因数分解:

$2^5\times 3^2\times {\mathrm{59}}^1\times {\mathrm{1231}}^1$

素因数の和:1306

約数の個数: 72

約数和(自身を含む): 60540480

約数和(自身を除く): 39623328

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 59, 72, 96, 118, 144, 177, 236, 288, 354, 472, 531, 708, 944, 1062, 1231, 1416, 1888, 2124, 2462, 2832, 3693, 4248, 4924, 5664, 7386, 8496, 9848, 11079, 14772, 16992, 19696, 22158, 29544, 39392, 44316, 59088, 72629, 88632, 118176, 145258, 177264, 217887, 290516, 354528, 435774, 581032, 653661, 871548, 1162064, 1307322, 1743096, 2324128, 2614644, 3486192, 5229288, 6972384, 10458576, 20917152]

約数ペア:

[(1, 20917152), (2, 10458576), (3, 6972384), (4, 5229288), (6, 3486192), (8, 2614644), (9, 2324128), (12, 1743096), (16, 1307322), (18, 1162064), (24, 871548), (32, 653661), (36, 581032), (48, 435774), (59, 354528), (72, 290516), (96, 217887), (118, 177264), (144, 145258), (177, 118176), (236, 88632), (288, 72629), (354, 59088), (472, 44316), (531, 39392), (708, 29544), (944, 22158), (1062, 19696), (1231, 16992), (1416, 14772), (1888, 11079), (2124, 9848), (2462, 8496), (2832, 7386), (3693, 5664), (4248, 4924)]