81816254

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{1223}}^1$

素因数の和:1352

約数の個数: 32

約数和(自身を含む): 138184704

約数和(自身を除く): 56368450

約数列:

[1, 2, 13, 26, 31, 62, 83, 166, 403, 806, 1079, 1223, 2158, 2446, 2573, 5146, 15899, 31798, 33449, 37913, 66898, 75826, 101509, 203018, 492869, 985738, 1319617, 2639234, 3146779, 6293558, 40908127, 81816254]

約数ペア:

[(1, 81816254), (2, 40908127), (13, 6293558), (26, 3146779), (31, 2639234), (62, 1319617), (83, 985738), (166, 492869), (403, 203018), (806, 101509), (1079, 75826), (1223, 66898), (2158, 37913), (2446, 33449), (2573, 31798), (5146, 15899)]