21527960

素因数分解:

$2^3\times 5^1\times {\mathrm{538199}}^1$

素因数の和:538210

約数の個数: 16

約数和(自身を含む): 48438000

約数和(自身を除く): 26910040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 538199, 1076398, 2152796, 2690995, 4305592, 5381990, 10763980, 21527960]

約数ペア:

[(1, 21527960), (2, 10763980), (4, 5381990), (5, 4305592), (8, 2690995), (10, 2152796), (20, 1076398), (40, 538199)]