81224020

素因数分解:

$2^2\times 5^1\times {\mathrm{1319}}^1\times {\mathrm{3079}}^1$

素因数の和:4407

約数の個数: 24

約数和(自身を含む): 170755200

約数和(自身を除く): 89531180

約数列:

[1, 2, 4, 5, 10, 20, 1319, 2638, 3079, 5276, 6158, 6595, 12316, 13190, 15395, 26380, 30790, 61580, 4061201, 8122402, 16244804, 20306005, 40612010, 81224020]

約数ペア:

[(1, 81224020), (2, 40612010), (4, 20306005), (5, 16244804), (10, 8122402), (20, 4061201), (1319, 61580), (2638, 30790), (3079, 26380), (5276, 15395), (6158, 13190), (6595, 12316)]