81912090

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{210031}}^1$

素因数の和:210054

約数の個数: 32

約数和(自身を含む): 211712256

約数和(自身を除く): 129800166

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 210031, 420062, 630093, 1050155, 1260186, 2100310, 2730403, 3150465, 5460806, 6300930, 8191209, 13652015, 16382418, 27304030, 40956045, 81912090]

約数ペア:

[(1, 81912090), (2, 40956045), (3, 27304030), (5, 16382418), (6, 13652015), (10, 8191209), (13, 6300930), (15, 5460806), (26, 3150465), (30, 2730403), (39, 2100310), (65, 1260186), (78, 1050155), (130, 630093), (195, 420062), (390, 210031)]