18980104

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{353}}^1$

素因数の和:430

約数の個数: 64

約数和(自身を含む): 42819840

約数和(自身を除く): 23839736

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 47, 52, 88, 94, 104, 143, 188, 286, 353, 376, 517, 572, 611, 706, 1034, 1144, 1222, 1412, 2068, 2444, 2824, 3883, 4136, 4589, 4888, 6721, 7766, 9178, 13442, 15532, 16591, 18356, 26884, 31064, 33182, 36712, 50479, 53768, 66364, 100958, 132728, 182501, 201916, 215683, 365002, 403832, 431366, 730004, 862732, 1460008, 1725464, 2372513, 4745026, 9490052, 18980104]

約数ペア:

[(1, 18980104), (2, 9490052), (4, 4745026), (8, 2372513), (11, 1725464), (13, 1460008), (22, 862732), (26, 730004), (44, 431366), (47, 403832), (52, 365002), (88, 215683), (94, 201916), (104, 182501), (143, 132728), (188, 100958), (286, 66364), (353, 53768), (376, 50479), (517, 36712), (572, 33182), (611, 31064), (706, 26884), (1034, 18356), (1144, 16591), (1222, 15532), (1412, 13442), (2068, 9178), (2444, 7766), (2824, 6721), (3883, 4888), (4136, 4589)]