21000608690

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{517129}}^1$

素因数の和:517298

約数の個数: 32

約数和(自身を含む): 39318428160

約数和(自身を除く): 18317819470

約数列:

[1, 2, 5, 10, 31, 62, 131, 155, 262, 310, 655, 1310, 4061, 8122, 20305, 40610, 517129, 1034258, 2585645, 5171290, 16030999, 32061998, 67743899, 80154995, 135487798, 160309990, 338719495, 677438990, 2100060869, 4200121738, 10500304345, 21000608690]

約数ペア:

[(1, 21000608690), (2, 10500304345), (5, 4200121738), (10, 2100060869), (31, 677438990), (62, 338719495), (131, 160309990), (155, 135487798), (262, 80154995), (310, 67743899), (655, 32061998), (1310, 16030999), (4061, 5171290), (8122, 2585645), (20305, 1034258), (40610, 517129)]