256982180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{141199}}^1$

素因数の和:141228

約数の個数: 48

約数和(自身を含む): 664204800

約数和(自身を除く): 407222620

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 141199, 282398, 564796, 705995, 988393, 1411990, 1835587, 1976786, 2823980, 3671174, 3953572, 4941965, 7342348, 9177935, 9883930, 12849109, 18355870, 19767860, 25698218, 36711740, 51396436, 64245545, 128491090, 256982180]

約数ペア:

[(1, 256982180), (2, 128491090), (4, 64245545), (5, 51396436), (7, 36711740), (10, 25698218), (13, 19767860), (14, 18355870), (20, 12849109), (26, 9883930), (28, 9177935), (35, 7342348), (52, 4941965), (65, 3953572), (70, 3671174), (91, 2823980), (130, 1976786), (140, 1835587), (182, 1411990), (260, 988393), (364, 705995), (455, 564796), (910, 282398), (1820, 141199)]