21816788

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{1783}}^1$

素因数の和:1836

約数の個数: 48

約数和(自身を含む): 47953920

約数和(自身を除く): 26137132

約数列:

[1, 2, 4, 7, 14, 19, 23, 28, 38, 46, 76, 92, 133, 161, 266, 322, 437, 532, 644, 874, 1748, 1783, 3059, 3566, 6118, 7132, 12236, 12481, 24962, 33877, 41009, 49924, 67754, 82018, 135508, 164036, 237139, 287063, 474278, 574126, 779171, 948556, 1148252, 1558342, 3116684, 5454197, 10908394, 21816788]

約数ペア:

[(1, 21816788), (2, 10908394), (4, 5454197), (7, 3116684), (14, 1558342), (19, 1148252), (23, 948556), (28, 779171), (38, 574126), (46, 474278), (76, 287063), (92, 237139), (133, 164036), (161, 135508), (266, 82018), (322, 67754), (437, 49924), (532, 41009), (644, 33877), (874, 24962), (1748, 12481), (1783, 12236), (3059, 7132), (3566, 6118)]