21190065

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^3\times {\mathrm{643}}^1$

素因数の和:690

約数の個数: 32

約数和(自身を含む): 36785280

約数和(自身を除く): 15595215

約数列:

[1, 3, 5, 13, 15, 39, 65, 169, 195, 507, 643, 845, 1929, 2197, 2535, 3215, 6591, 8359, 9645, 10985, 25077, 32955, 41795, 108667, 125385, 326001, 543335, 1412671, 1630005, 4238013, 7063355, 21190065]

約数ペア:

[(1, 21190065), (3, 7063355), (5, 4238013), (13, 1630005), (15, 1412671), (39, 543335), (65, 326001), (169, 125385), (195, 108667), (507, 41795), (643, 32955), (845, 25077), (1929, 10985), (2197, 9645), (2535, 8359), (3215, 6591)]