21019455

素因数分解:

$3^2\times 5^1\times {\mathrm{167}}^1\times {\mathrm{2797}}^1$

素因数の和:2975

約数の個数: 24

約数和(自身を含む): 36664992

約数和(自身を除く): 15645537

約数列:

[1, 3, 5, 9, 15, 45, 167, 501, 835, 1503, 2505, 2797, 7515, 8391, 13985, 25173, 41955, 125865, 467099, 1401297, 2335495, 4203891, 7006485, 21019455]

約数ペア:

[(1, 21019455), (3, 7006485), (5, 4203891), (9, 2335495), (15, 1401297), (45, 467099), (167, 125865), (501, 41955), (835, 25173), (1503, 13985), (2505, 8391), (2797, 7515)]