21726310

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{2789}}^1$

素因数の和:2856

約数の個数: 32

約数和(自身を含む): 42184800

約数和(自身を除く): 20458490

約数列:

[1, 2, 5, 10, 19, 38, 41, 82, 95, 190, 205, 410, 779, 1558, 2789, 3895, 5578, 7790, 13945, 27890, 52991, 105982, 114349, 228698, 264955, 529910, 571745, 1143490, 2172631, 4345262, 10863155, 21726310]

約数ペア:

[(1, 21726310), (2, 10863155), (5, 4345262), (10, 2172631), (19, 1143490), (38, 571745), (41, 529910), (82, 264955), (95, 228698), (190, 114349), (205, 105982), (410, 52991), (779, 27890), (1558, 13945), (2789, 7790), (3895, 5578)]