21819760

素因数分解:

$2^4\times 5^1\times {\mathrm{311}}^1\times {\mathrm{877}}^1$

素因数の和:1201

約数の個数: 40

約数和(自身を含む): 50952096

約数和(自身を除く): 29132336

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 311, 622, 877, 1244, 1555, 1754, 2488, 3110, 3508, 4385, 4976, 6220, 7016, 8770, 12440, 14032, 17540, 24880, 35080, 70160, 272747, 545494, 1090988, 1363735, 2181976, 2727470, 4363952, 5454940, 10909880, 21819760]

約数ペア:

[(1, 21819760), (2, 10909880), (4, 5454940), (5, 4363952), (8, 2727470), (10, 2181976), (16, 1363735), (20, 1090988), (40, 545494), (80, 272747), (311, 70160), (622, 35080), (877, 24880), (1244, 17540), (1555, 14032), (1754, 12440), (2488, 8770), (3110, 7016), (3508, 6220), (4385, 4976)]