21312040

素因数分解:

$2^3\times 5^1\times {\mathrm{532801}}^1$

素因数の和:532812

約数の個数: 16

約数和(自身を含む): 47952180

約数和(自身を除く): 26640140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 532801, 1065602, 2131204, 2664005, 4262408, 5328010, 10656020, 21312040]

約数ペア:

[(1, 21312040), (2, 10656020), (4, 5328010), (5, 4262408), (8, 2664005), (10, 2131204), (20, 1065602), (40, 532801)]