19845420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{47251}}^1$

素因数の和:47270

約数の個数: 48

約数和(自身を含む): 63506688

約数和(自身を除く): 43661268

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 47251, 94502, 141753, 189004, 236255, 283506, 330757, 472510, 567012, 661514, 708765, 945020, 992271, 1323028, 1417530, 1653785, 1984542, 2835060, 3307570, 3969084, 4961355, 6615140, 9922710, 19845420]

約数ペア:

[(1, 19845420), (2, 9922710), (3, 6615140), (4, 4961355), (5, 3969084), (6, 3307570), (7, 2835060), (10, 1984542), (12, 1653785), (14, 1417530), (15, 1323028), (20, 992271), (21, 945020), (28, 708765), (30, 661514), (35, 567012), (42, 472510), (60, 330757), (70, 283506), (84, 236255), (105, 189004), (140, 141753), (210, 94502), (420, 47251)]