128638377

素因数分解:

$3^2\times 7^4\times {\mathrm{5953}}^1$

素因数の和:5987

約数の個数: 30

約数和(自身を含む): 216803002

約数和(自身を除く): 88164625

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 343, 441, 1029, 2401, 3087, 5953, 7203, 17859, 21609, 41671, 53577, 125013, 291697, 375039, 875091, 2041879, 2625273, 6125637, 14293153, 18376911, 42879459, 128638377]

約数ペア:

[(1, 128638377), (3, 42879459), (7, 18376911), (9, 14293153), (21, 6125637), (49, 2625273), (63, 2041879), (147, 875091), (343, 375039), (441, 291697), (1029, 125013), (2401, 53577), (3087, 41671), (5953, 21609), (7203, 17859)]