18718040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2239}}^1$

素因数の和:2280

約数の個数: 64

約数和(自身を含む): 48384000

約数和(自身を除く): 29665960

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 38, 40, 44, 55, 76, 88, 95, 110, 152, 190, 209, 220, 380, 418, 440, 760, 836, 1045, 1672, 2090, 2239, 4180, 4478, 8360, 8956, 11195, 17912, 22390, 24629, 42541, 44780, 49258, 85082, 89560, 98516, 123145, 170164, 197032, 212705, 246290, 340328, 425410, 467951, 492580, 850820, 935902, 985160, 1701640, 1871804, 2339755, 3743608, 4679510, 9359020, 18718040]

約数ペア:

[(1, 18718040), (2, 9359020), (4, 4679510), (5, 3743608), (8, 2339755), (10, 1871804), (11, 1701640), (19, 985160), (20, 935902), (22, 850820), (38, 492580), (40, 467951), (44, 425410), (55, 340328), (76, 246290), (88, 212705), (95, 197032), (110, 170164), (152, 123145), (190, 98516), (209, 89560), (220, 85082), (380, 49258), (418, 44780), (440, 42541), (760, 24629), (836, 22390), (1045, 17912), (1672, 11195), (2090, 8956), (2239, 8360), (4180, 4478)]