21056154

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{131}}^1$

素因数の和:275

約数の個数: 64

約数和(自身を含む): 50181120

約数和(自身を除く): 29124966

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 43, 86, 89, 129, 131, 178, 258, 262, 267, 301, 393, 534, 602, 623, 786, 903, 917, 1246, 1806, 1834, 1869, 2751, 3738, 3827, 5502, 5633, 7654, 11266, 11481, 11659, 16899, 22962, 23318, 26789, 33798, 34977, 39431, 53578, 69954, 78862, 80367, 81613, 118293, 160734, 163226, 236586, 244839, 489678, 501337, 1002674, 1504011, 3008022, 3509359, 7018718, 10528077, 21056154]

約数ペア:

[(1, 21056154), (2, 10528077), (3, 7018718), (6, 3509359), (7, 3008022), (14, 1504011), (21, 1002674), (42, 501337), (43, 489678), (86, 244839), (89, 236586), (129, 163226), (131, 160734), (178, 118293), (258, 81613), (262, 80367), (267, 78862), (301, 69954), (393, 53578), (534, 39431), (602, 34977), (623, 33798), (786, 26789), (903, 23318), (917, 22962), (1246, 16899), (1806, 11659), (1834, 11481), (1869, 11266), (2751, 7654), (3738, 5633), (3827, 5502)]