21290685

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{2663}}^1$

素因数の和:2725

約数の個数: 32

約数和(自身を含む): 37594368

約数和(自身を除く): 16303683

約数列:

[1, 3, 5, 13, 15, 39, 41, 65, 123, 195, 205, 533, 615, 1599, 2663, 2665, 7989, 7995, 13315, 34619, 39945, 103857, 109183, 173095, 327549, 519285, 545915, 1419379, 1637745, 4258137, 7096895, 21290685]

約数ペア:

[(1, 21290685), (3, 7096895), (5, 4258137), (13, 1637745), (15, 1419379), (39, 545915), (41, 519285), (65, 327549), (123, 173095), (195, 109183), (205, 103857), (533, 39945), (615, 34619), (1599, 13315), (2663, 7995), (2665, 7989)]