81386560

素因数分解:

$2^6\times 5^1\times {\mathrm{419}}^1\times {\mathrm{607}}^1$

素因数の和:1043

約数の個数: 56

約数和(自身を含む): 194584320

約数和(自身を除く): 113197760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 419, 607, 838, 1214, 1676, 2095, 2428, 3035, 3352, 4190, 4856, 6070, 6704, 8380, 9712, 12140, 13408, 16760, 19424, 24280, 26816, 33520, 38848, 48560, 67040, 97120, 134080, 194240, 254333, 508666, 1017332, 1271665, 2034664, 2543330, 4069328, 5086660, 8138656, 10173320, 16277312, 20346640, 40693280, 81386560]

約数ペア:

[(1, 81386560), (2, 40693280), (4, 20346640), (5, 16277312), (8, 10173320), (10, 8138656), (16, 5086660), (20, 4069328), (32, 2543330), (40, 2034664), (64, 1271665), (80, 1017332), (160, 508666), (320, 254333), (419, 194240), (607, 134080), (838, 97120), (1214, 67040), (1676, 48560), (2095, 38848), (2428, 33520), (3035, 26816), (3352, 24280), (4190, 19424), (4856, 16760), (6070, 13408), (6704, 12140), (8380, 9712)]