256323340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{140837}}^1$

素因数の和:140866

約数の個数: 48

約数和(自身を含む): 662501952

約数和(自身を除く): 406178612

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, 140837, 281674, 563348, 704185, 985859, 1408370, 1830881, 1971718, 2816740, 3661762, 3943436, 4929295, 7323524, 9154405, 9858590, 12816167, 18308810, 19717180, 25632334, 36617620, 51264668, 64080835, 128161670, 256323340]

約数ペア:

[(1, 256323340), (2, 128161670), (4, 64080835), (5, 51264668), (7, 36617620), (10, 25632334), (13, 19717180), (14, 18308810), (20, 12816167), (26, 9858590), (28, 9154405), (35, 7323524), (52, 4929295), (65, 3943436), (70, 3661762), (91, 2816740), (130, 1971718), (140, 1830881), (182, 1408370), (260, 985859), (364, 704185), (455, 563348), (910, 281674), (1820, 140837)]