81436620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{25609}}^1$

素因数の和:25674

約数の個数: 48

約数和(自身を含む): 232333920

約数和(自身を除く): 150897300

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 53, 60, 106, 159, 212, 265, 318, 530, 636, 795, 1060, 1590, 3180, 25609, 51218, 76827, 102436, 128045, 153654, 256090, 307308, 384135, 512180, 768270, 1357277, 1536540, 2714554, 4071831, 5429108, 6786385, 8143662, 13572770, 16287324, 20359155, 27145540, 40718310, 81436620]

約数ペア:

[(1, 81436620), (2, 40718310), (3, 27145540), (4, 20359155), (5, 16287324), (6, 13572770), (10, 8143662), (12, 6786385), (15, 5429108), (20, 4071831), (30, 2714554), (53, 1536540), (60, 1357277), (106, 768270), (159, 512180), (212, 384135), (265, 307308), (318, 256090), (530, 153654), (636, 128045), (795, 102436), (1060, 76827), (1590, 51218), (3180, 25609)]