19554040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2339}}^1$

素因数の和:2380

約数の個数: 64

約数和(自身を含む): 50544000

約数和(自身を除く): 30989960

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, 2339, 4180, 4678, 8360, 9356, 11695, 18712, 23390, 25729, 44441, 46780, 51458, 88882, 93560, 102916, 128645, 177764, 205832, 222205, 257290, 355528, 444410, 488851, 514580, 888820, 977702, 1029160, 1777640, 1955404, 2444255, 3910808, 4888510, 9777020, 19554040]

約数ペア:

[(1, 19554040), (2, 9777020), (4, 4888510), (5, 3910808), (8, 2444255), (10, 1955404), (11, 1777640), (19, 1029160), (20, 977702), (22, 888820), (38, 514580), (40, 488851), (44, 444410), (55, 355528), (76, 257290), (88, 222205), (95, 205832), (110, 177764), (152, 128645), (190, 102916), (209, 93560), (220, 88882), (380, 51458), (418, 46780), (440, 44441), (760, 25729), (836, 23390), (1045, 18712), (1672, 11695), (2090, 9356), (2339, 8360), (4180, 4678)]