21357644

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{4079}}^1$

素因数の和:4118

約数の個数: 48

約数和(自身を含む): 49351680

約数和(自身を除く): 27994036

約数列:

[1, 2, 4, 7, 11, 14, 17, 22, 28, 34, 44, 68, 77, 119, 154, 187, 238, 308, 374, 476, 748, 1309, 2618, 4079, 5236, 8158, 16316, 28553, 44869, 57106, 69343, 89738, 114212, 138686, 179476, 277372, 314083, 485401, 628166, 762773, 970802, 1256332, 1525546, 1941604, 3051092, 5339411, 10678822, 21357644]

約数ペア:

[(1, 21357644), (2, 10678822), (4, 5339411), (7, 3051092), (11, 1941604), (14, 1525546), (17, 1256332), (22, 970802), (28, 762773), (34, 628166), (44, 485401), (68, 314083), (77, 277372), (119, 179476), (154, 138686), (187, 114212), (238, 89738), (308, 69343), (374, 57106), (476, 44869), (748, 28553), (1309, 16316), (2618, 8158), (4079, 5236)]