21789804985

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1493}}^1\times {\mathrm{7243}}^1$

素因数の和:8785

約数の個数: 32

約数和(自身を含む): 29090976768

約数和(自身を除く): 7301171783

約数列:

[1, 5, 13, 31, 65, 155, 403, 1493, 2015, 7243, 7465, 19409, 36215, 46283, 94159, 97045, 224533, 231415, 470795, 601679, 1122665, 2918929, 3008395, 10813799, 14594645, 54068995, 140579387, 335227769, 702896935, 1676138845, 4357960997, 21789804985]

約数ペア:

[(1, 21789804985), (5, 4357960997), (13, 1676138845), (31, 702896935), (65, 335227769), (155, 140579387), (403, 54068995), (1493, 14594645), (2015, 10813799), (7243, 3008395), (7465, 2918929), (19409, 1122665), (36215, 601679), (46283, 470795), (94159, 231415), (97045, 224533)]