20721109215

素因数分解:

$3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{22646021}}^1$

素因数の和:22646090

約数の個数: 16

約数和(自身を含む): 33697280736

約数和(自身を除く): 12976171521

約数列:

[1, 3, 5, 15, 61, 183, 305, 915, 22646021, 67938063, 113230105, 339690315, 1381407281, 4144221843, 6907036405, 20721109215]

約数ペア:

[(1, 20721109215), (3, 6907036405), (5, 4144221843), (15, 1381407281), (61, 339690315), (183, 113230105), (305, 67938063), (915, 22646021)]