81405628

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{4723}}^1$

素因数の和:4897

約数の個数: 24

約数和(自身を含む): 148144640

約数和(自身を除く): 66739012

約数列:

[1, 2, 4, 31, 62, 124, 139, 278, 556, 4309, 4723, 8618, 9446, 17236, 18892, 146413, 292826, 585652, 656497, 1312994, 2625988, 20351407, 40702814, 81405628]

約数ペア:

[(1, 81405628), (2, 40702814), (4, 20351407), (31, 2625988), (62, 1312994), (124, 656497), (139, 585652), (278, 292826), (556, 146413), (4309, 18892), (4723, 17236), (8618, 9446)]