21047376

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{1693}}^1$

素因数の和:1748

約数の個数: 80

約数和(自身を含む): 63857024

約数和(自身を除く): 42809648

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 37, 42, 48, 56, 74, 84, 111, 112, 148, 168, 222, 259, 296, 336, 444, 518, 592, 777, 888, 1036, 1554, 1693, 1776, 2072, 3108, 3386, 4144, 5079, 6216, 6772, 10158, 11851, 12432, 13544, 20316, 23702, 27088, 35553, 40632, 47404, 62641, 71106, 81264, 94808, 125282, 142212, 187923, 189616, 250564, 284424, 375846, 438487, 501128, 568848, 751692, 876974, 1002256, 1315461, 1503384, 1753948, 2630922, 3006768, 3507896, 5261844, 7015792, 10523688, 21047376]

約数ペア:

[(1, 21047376), (2, 10523688), (3, 7015792), (4, 5261844), (6, 3507896), (7, 3006768), (8, 2630922), (12, 1753948), (14, 1503384), (16, 1315461), (21, 1002256), (24, 876974), (28, 751692), (37, 568848), (42, 501128), (48, 438487), (56, 375846), (74, 284424), (84, 250564), (111, 189616), (112, 187923), (148, 142212), (168, 125282), (222, 94808), (259, 81264), (296, 71106), (336, 62641), (444, 47404), (518, 40632), (592, 35553), (777, 27088), (888, 23702), (1036, 20316), (1554, 13544), (1693, 12432), (1776, 11851), (2072, 10158), (3108, 6772), (3386, 6216), (4144, 5079)]