21636920

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{677}}^1$

素因数の和:752

約数の個数: 64

約数和(自身を含む): 52721280

約数和(自身を除く): 31084360

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 47, 68, 85, 94, 136, 170, 188, 235, 340, 376, 470, 677, 680, 799, 940, 1354, 1598, 1880, 2708, 3196, 3385, 3995, 5416, 6392, 6770, 7990, 11509, 13540, 15980, 23018, 27080, 31819, 31960, 46036, 57545, 63638, 92072, 115090, 127276, 159095, 230180, 254552, 318190, 460360, 540923, 636380, 1081846, 1272760, 2163692, 2704615, 4327384, 5409230, 10818460, 21636920]

約数ペア:

[(1, 21636920), (2, 10818460), (4, 5409230), (5, 4327384), (8, 2704615), (10, 2163692), (17, 1272760), (20, 1081846), (34, 636380), (40, 540923), (47, 460360), (68, 318190), (85, 254552), (94, 230180), (136, 159095), (170, 127276), (188, 115090), (235, 92072), (340, 63638), (376, 57545), (470, 46036), (677, 31960), (680, 31819), (799, 27080), (940, 23018), (1354, 15980), (1598, 13540), (1880, 11509), (2708, 7990), (3196, 6770), (3385, 6392), (3995, 5416)]