18942820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1777}}^1$

素因数の和:1840

約数の個数: 48

約数和(自身を含む): 43909488

約数和(自身を除く): 24966668

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 41, 52, 65, 82, 130, 164, 205, 260, 410, 533, 820, 1066, 1777, 2132, 2665, 3554, 5330, 7108, 8885, 10660, 17770, 23101, 35540, 46202, 72857, 92404, 115505, 145714, 231010, 291428, 364285, 462020, 728570, 947141, 1457140, 1894282, 3788564, 4735705, 9471410, 18942820]

約数ペア:

[(1, 18942820), (2, 9471410), (4, 4735705), (5, 3788564), (10, 1894282), (13, 1457140), (20, 947141), (26, 728570), (41, 462020), (52, 364285), (65, 291428), (82, 231010), (130, 145714), (164, 115505), (205, 92404), (260, 72857), (410, 46202), (533, 35540), (820, 23101), (1066, 17770), (1777, 10660), (2132, 8885), (2665, 7108), (3554, 5330)]