20640030

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{397}}^1\times {\mathrm{1733}}^1$

素因数の和:2140

約数の個数: 32

約数和(自身を含む): 49689504

約数和(自身を除く): 29049474

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 397, 794, 1191, 1733, 1985, 2382, 3466, 3970, 5199, 5955, 8665, 10398, 11910, 17330, 25995, 51990, 688001, 1376002, 2064003, 3440005, 4128006, 6880010, 10320015, 20640030]

約数ペア:

[(1, 20640030), (2, 10320015), (3, 6880010), (5, 4128006), (6, 3440005), (10, 2064003), (15, 1376002), (30, 688001), (397, 51990), (794, 25995), (1191, 17330), (1733, 11910), (1985, 10398), (2382, 8665), (3466, 5955), (3970, 5199)]