81620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1$

素因数の和:80

約数の個数: 48

約数和(自身を含む): 217728

約数和(自身を除く): 136108

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 53, 55, 70, 77, 106, 110, 140, 154, 212, 220, 265, 308, 371, 385, 530, 583, 742, 770, 1060, 1166, 1484, 1540, 1855, 2332, 2915, 3710, 4081, 5830, 7420, 8162, 11660, 16324, 20405, 40810, 81620]

約数ペア:

[(1, 81620), (2, 40810), (4, 20405), (5, 16324), (7, 11660), (10, 8162), (11, 7420), (14, 5830), (20, 4081), (22, 3710), (28, 2915), (35, 2332), (44, 1855), (53, 1540), (55, 1484), (70, 1166), (77, 1060), (106, 770), (110, 742), (140, 583), (154, 530), (212, 385), (220, 371), (265, 308)]