20398664

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{1621}}^1$

素因数の和:1662

約数の個数: 48

約数和(自身を含む): 45302460

約数和(自身を除く): 24903796

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 88, 104, 121, 143, 242, 286, 484, 572, 968, 1144, 1573, 1621, 3146, 3242, 6292, 6484, 12584, 12968, 17831, 21073, 35662, 42146, 71324, 84292, 142648, 168584, 196141, 231803, 392282, 463606, 784564, 927212, 1569128, 1854424, 2549833, 5099666, 10199332, 20398664]

約数ペア:

[(1, 20398664), (2, 10199332), (4, 5099666), (8, 2549833), (11, 1854424), (13, 1569128), (22, 927212), (26, 784564), (44, 463606), (52, 392282), (88, 231803), (104, 196141), (121, 168584), (143, 142648), (242, 84292), (286, 71324), (484, 42146), (572, 35662), (968, 21073), (1144, 17831), (1573, 12968), (1621, 12584), (3146, 6484), (3242, 6292)]