81121740

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{193147}}^1$

素因数の和:193166

約数の個数: 48

約数和(自身を含む): 259590912

約数和(自身を除く): 178469172

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, 193147, 386294, 579441, 772588, 965735, 1158882, 1352029, 1931470, 2317764, 2704058, 2897205, 3862940, 4056087, 5408116, 5794410, 6760145, 8112174, 11588820, 13520290, 16224348, 20280435, 27040580, 40560870, 81121740]

約数ペア:

[(1, 81121740), (2, 40560870), (3, 27040580), (4, 20280435), (5, 16224348), (6, 13520290), (7, 11588820), (10, 8112174), (12, 6760145), (14, 5794410), (15, 5408116), (20, 4056087), (21, 3862940), (28, 2897205), (30, 2704058), (35, 2317764), (42, 1931470), (60, 1352029), (70, 1158882), (84, 965735), (105, 772588), (140, 579441), (210, 386294), (420, 193147)]