28923220

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{16249}}^1$

素因数の和:16347

約数の個数: 24

約数和(自身を含む): 61425000

約数和(自身を除く): 32501780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 16249, 32498, 64996, 81245, 162490, 324980, 1446161, 2892322, 5784644, 7230805, 14461610, 28923220]

約数ペア:

[(1, 28923220), (2, 14461610), (4, 7230805), (5, 5784644), (10, 2892322), (20, 1446161), (89, 324980), (178, 162490), (356, 81245), (445, 64996), (890, 32498), (1780, 16249)]