81656728

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{3967}}^1$

素因数の和:4087

約数の個数: 32

約数和(自身を含む): 159989760

約数和(自身を除く): 78333032

約数列:

[1, 2, 4, 8, 31, 62, 83, 124, 166, 248, 332, 664, 2573, 3967, 5146, 7934, 10292, 15868, 20584, 31736, 122977, 245954, 329261, 491908, 658522, 983816, 1317044, 2634088, 10207091, 20414182, 40828364, 81656728]

約数ペア:

[(1, 81656728), (2, 40828364), (4, 20414182), (8, 10207091), (31, 2634088), (62, 1317044), (83, 983816), (124, 658522), (166, 491908), (248, 329261), (332, 245954), (664, 122977), (2573, 31736), (3967, 20584), (5146, 15868), (7934, 10292)]