20429080

素因数分解:

$2^3\times 5^1\times 7^3\times {\mathrm{1489}}^1$

素因数の和:1521

約数の個数: 64

約数和(自身を含む): 53640000

約数和(自身を除く): 33210920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 343, 392, 490, 686, 980, 1372, 1489, 1715, 1960, 2744, 2978, 3430, 5956, 6860, 7445, 10423, 11912, 13720, 14890, 20846, 29780, 41692, 52115, 59560, 72961, 83384, 104230, 145922, 208460, 291844, 364805, 416920, 510727, 583688, 729610, 1021454, 1459220, 2042908, 2553635, 2918440, 4085816, 5107270, 10214540, 20429080]

約数ペア:

[(1, 20429080), (2, 10214540), (4, 5107270), (5, 4085816), (7, 2918440), (8, 2553635), (10, 2042908), (14, 1459220), (20, 1021454), (28, 729610), (35, 583688), (40, 510727), (49, 416920), (56, 364805), (70, 291844), (98, 208460), (140, 145922), (196, 104230), (245, 83384), (280, 72961), (343, 59560), (392, 52115), (490, 41692), (686, 29780), (980, 20846), (1372, 14890), (1489, 13720), (1715, 11912), (1960, 10423), (2744, 7445), (2978, 6860), (3430, 5956)]