21018712

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{967}}^1$

素因数の和:1016

約数の個数: 64

約数和(自身を含む): 48787200

約数和(自身を除く): 27768488

約数列:

[1, 2, 4, 8, 11, 13, 19, 22, 26, 38, 44, 52, 76, 88, 104, 143, 152, 209, 247, 286, 418, 494, 572, 836, 967, 988, 1144, 1672, 1934, 1976, 2717, 3868, 5434, 7736, 10637, 10868, 12571, 18373, 21274, 21736, 25142, 36746, 42548, 50284, 73492, 85096, 100568, 138281, 146984, 202103, 238849, 276562, 404206, 477698, 553124, 808412, 955396, 1106248, 1616824, 1910792, 2627339, 5254678, 10509356, 21018712]

約数ペア:

[(1, 21018712), (2, 10509356), (4, 5254678), (8, 2627339), (11, 1910792), (13, 1616824), (19, 1106248), (22, 955396), (26, 808412), (38, 553124), (44, 477698), (52, 404206), (76, 276562), (88, 238849), (104, 202103), (143, 146984), (152, 138281), (209, 100568), (247, 85096), (286, 73492), (418, 50284), (494, 42548), (572, 36746), (836, 25142), (967, 21736), (988, 21274), (1144, 18373), (1672, 12571), (1934, 10868), (1976, 10637), (2717, 7736), (3868, 5434)]