15881720

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{20897}}^1$

素因数の和:20927

約数の個数: 32

約数和(自身を含む): 37616400

約数和(自身を除く): 21734680

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 20897, 41794, 83588, 104485, 167176, 208970, 397043, 417940, 794086, 835880, 1588172, 1985215, 3176344, 3970430, 7940860, 15881720]

約数ペア:

[(1, 15881720), (2, 7940860), (4, 3970430), (5, 3176344), (8, 1985215), (10, 1588172), (19, 835880), (20, 794086), (38, 417940), (40, 397043), (76, 208970), (95, 167176), (152, 104485), (190, 83588), (380, 41794), (760, 20897)]