21916000

素因数分解:

$2^5\times 5^3\times {\mathrm{5479}}^1$

素因数の和:5504

約数の個数: 48

約数和(自身を含む): 53857440

約数和(自身を除く): 31941440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 800, 1000, 2000, 4000, 5479, 10958, 21916, 27395, 43832, 54790, 87664, 109580, 136975, 175328, 219160, 273950, 438320, 547900, 684875, 876640, 1095800, 1369750, 2191600, 2739500, 4383200, 5479000, 10958000, 21916000]

約数ペア:

[(1, 21916000), (2, 10958000), (4, 5479000), (5, 4383200), (8, 2739500), (10, 2191600), (16, 1369750), (20, 1095800), (25, 876640), (32, 684875), (40, 547900), (50, 438320), (80, 273950), (100, 219160), (125, 175328), (160, 136975), (200, 109580), (250, 87664), (400, 54790), (500, 43832), (800, 27395), (1000, 21916), (2000, 10958), (4000, 5479)]