28438010

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1\times {\mathrm{499}}^1$

素因数の和:686

約数の個数: 32

約数和(自身を含む): 52920000

約数和(自身を除く): 24481990

約数列:

[1, 2, 5, 10, 41, 82, 139, 205, 278, 410, 499, 695, 998, 1390, 2495, 4990, 5699, 11398, 20459, 28495, 40918, 56990, 69361, 102295, 138722, 204590, 346805, 693610, 2843801, 5687602, 14219005, 28438010]

約数ペア:

[(1, 28438010), (2, 14219005), (5, 5687602), (10, 2843801), (41, 693610), (82, 346805), (139, 204590), (205, 138722), (278, 102295), (410, 69361), (499, 56990), (695, 40918), (998, 28495), (1390, 20459), (2495, 11398), (4990, 5699)]