18928060

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^2\times {\mathrm{563}}^1$

素因数の和:654

約数の個数: 36

約数和(自身を含む): 40814424

約数和(自身を除く): 21886364

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 563, 820, 1126, 1681, 2252, 2815, 3362, 5630, 6724, 8405, 11260, 16810, 23083, 33620, 46166, 92332, 115415, 230830, 461660, 946403, 1892806, 3785612, 4732015, 9464030, 18928060]

約数ペア:

[(1, 18928060), (2, 9464030), (4, 4732015), (5, 3785612), (10, 1892806), (20, 946403), (41, 461660), (82, 230830), (164, 115415), (205, 92332), (410, 46166), (563, 33620), (820, 23083), (1126, 16810), (1681, 11260), (2252, 8405), (2815, 6724), (3362, 5630)]