21980847

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{2677}}^1$

素因数の和:2727

約数の個数: 32

約数和(自身を含む): 37020672

約数和(自身を除く): 15039825

約数列:

[1, 3, 7, 17, 21, 23, 51, 69, 119, 161, 357, 391, 483, 1173, 2677, 2737, 8031, 8211, 18739, 45509, 56217, 61571, 136527, 184713, 318563, 430997, 955689, 1046707, 1292991, 3140121, 7326949, 21980847]

約数ペア:

[(1, 21980847), (3, 7326949), (7, 3140121), (17, 1292991), (21, 1046707), (23, 955689), (51, 430997), (69, 318563), (119, 184713), (161, 136527), (357, 61571), (391, 56217), (483, 45509), (1173, 18739), (2677, 8211), (2737, 8031)]