277931220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{661741}}^1$

素因数の和:661760

約数の個数: 48

約数和(自身を含む): 889381248

約数和(自身を除く): 611450028

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 661741, 1323482, 1985223, 2646964, 3308705, 3970446, 4632187, 6617410, 7940892, 9264374, 9926115, 13234820, 13896561, 18528748, 19852230, 23160935, 27793122, 39704460, 46321870, 55586244, 69482805, 92643740, 138965610, 277931220]

約数ペア:

[(1, 277931220), (2, 138965610), (3, 92643740), (4, 69482805), (5, 55586244), (6, 46321870), (7, 39704460), (10, 27793122), (12, 23160935), (14, 19852230), (15, 18528748), (20, 13896561), (21, 13234820), (28, 9926115), (30, 9264374), (35, 7940892), (42, 6617410), (60, 4632187), (70, 3970446), (84, 3308705), (105, 2646964), (140, 1985223), (210, 1323482), (420, 661741)]