13172920

素因数分解:

$2^3\times 5^1\times {\mathrm{509}}^1\times {\mathrm{647}}^1$

素因数の和:1167

約数の個数: 32

約数和(自身を含む): 29743200

約数和(自身を除く): 16570280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 509, 647, 1018, 1294, 2036, 2545, 2588, 3235, 4072, 5090, 5176, 6470, 10180, 12940, 20360, 25880, 329323, 658646, 1317292, 1646615, 2634584, 3293230, 6586460, 13172920]

約数ペア:

[(1, 13172920), (2, 6586460), (4, 3293230), (5, 2634584), (8, 1646615), (10, 1317292), (20, 658646), (40, 329323), (509, 25880), (647, 20360), (1018, 12940), (1294, 10180), (2036, 6470), (2545, 5176), (2588, 5090), (3235, 4072)]