21315990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{487}}^1\times {\mathrm{1459}}^1$

素因数の和:1956

約数の個数: 32

約数和(自身を含む): 51298560

約数和(自身を除く): 29982570

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 487, 974, 1459, 1461, 2435, 2918, 2922, 4377, 4870, 7295, 7305, 8754, 14590, 14610, 21885, 43770, 710533, 1421066, 2131599, 3552665, 4263198, 7105330, 10657995, 21315990]

約数ペア:

[(1, 21315990), (2, 10657995), (3, 7105330), (5, 4263198), (6, 3552665), (10, 2131599), (15, 1421066), (30, 710533), (487, 43770), (974, 21885), (1459, 14610), (1461, 14590), (2435, 8754), (2918, 7305), (2922, 7295), (4377, 4870)]