16161820

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{193}}^1$

素因数の和:334

約数の個数: 48

約数和(自身を含む): 35199360

約数和(自身を除く): 19037540

約数列:

[1, 2, 4, 5, 10, 20, 53, 79, 106, 158, 193, 212, 265, 316, 386, 395, 530, 772, 790, 965, 1060, 1580, 1930, 3860, 4187, 8374, 10229, 15247, 16748, 20458, 20935, 30494, 40916, 41870, 51145, 60988, 76235, 83740, 102290, 152470, 204580, 304940, 808091, 1616182, 3232364, 4040455, 8080910, 16161820]

約数ペア:

[(1, 16161820), (2, 8080910), (4, 4040455), (5, 3232364), (10, 1616182), (20, 808091), (53, 304940), (79, 204580), (106, 152470), (158, 102290), (193, 83740), (212, 76235), (265, 60988), (316, 51145), (386, 41870), (395, 40916), (530, 30494), (772, 20935), (790, 20458), (965, 16748), (1060, 15247), (1580, 10229), (1930, 8374), (3860, 4187)]