542172820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1949}}^1\times {\mathrm{1987}}^1$

素因数の和:3952

約数の個数: 48

約数和(自身を含む): 1302537600

約数和(自身を除く): 760364780

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1949, 1987, 3898, 3974, 7796, 7948, 9745, 9935, 13643, 13909, 19490, 19870, 27286, 27818, 38980, 39740, 54572, 55636, 68215, 69545, 136430, 139090, 272860, 278180, 3872663, 7745326, 15490652, 19363315, 27108641, 38726630, 54217282, 77453260, 108434564, 135543205, 271086410, 542172820]

約数ペア:

[(1, 542172820), (2, 271086410), (4, 135543205), (5, 108434564), (7, 77453260), (10, 54217282), (14, 38726630), (20, 27108641), (28, 19363315), (35, 15490652), (70, 7745326), (140, 3872663), (1949, 278180), (1987, 272860), (3898, 139090), (3974, 136430), (7796, 69545), (7948, 68215), (9745, 55636), (9935, 54572), (13643, 39740), (13909, 38980), (19490, 27818), (19870, 27286)]