19215920

素因数分解:

$2^4\times 5^1\times {\mathrm{401}}^1\times {\mathrm{599}}^1$

素因数の和:1013

約数の個数: 40

約数和(自身を含む): 44863200

約数和(自身を除く): 25647280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 401, 599, 802, 1198, 1604, 2005, 2396, 2995, 3208, 4010, 4792, 5990, 6416, 8020, 9584, 11980, 16040, 23960, 32080, 47920, 240199, 480398, 960796, 1200995, 1921592, 2401990, 3843184, 4803980, 9607960, 19215920]

約数ペア:

[(1, 19215920), (2, 9607960), (4, 4803980), (5, 3843184), (8, 2401990), (10, 1921592), (16, 1200995), (20, 960796), (40, 480398), (80, 240199), (401, 47920), (599, 32080), (802, 23960), (1198, 16040), (1604, 11980), (2005, 9584), (2396, 8020), (2995, 6416), (3208, 5990), (4010, 4792)]