21361365

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{20639}}^1$

素因数の和:20673

約数の個数: 24

約数和(自身を含む): 38638080

約数和(自身を除く): 17276715

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 115, 207, 345, 1035, 20639, 61917, 103195, 185751, 309585, 474697, 928755, 1424091, 2373485, 4272273, 7120455, 21361365]

約数ペア:

[(1, 21361365), (3, 7120455), (5, 4272273), (9, 2373485), (15, 1424091), (23, 928755), (45, 474697), (69, 309585), (115, 185751), (207, 103195), (345, 61917), (1035, 20639)]