21075795

素因数分解:

$3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4003}}^1$

素因数の和:4033

約数の個数: 40

約数和(自身を含む): 40696656

約数和(自身を除く): 19620861

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 81, 117, 135, 195, 351, 405, 585, 1053, 1755, 4003, 5265, 12009, 20015, 36027, 52039, 60045, 108081, 156117, 180135, 260195, 324243, 468351, 540405, 780585, 1405053, 1621215, 2341755, 4215159, 7025265, 21075795]

約数ペア:

[(1, 21075795), (3, 7025265), (5, 4215159), (9, 2341755), (13, 1621215), (15, 1405053), (27, 780585), (39, 540405), (45, 468351), (65, 324243), (81, 260195), (117, 180135), (135, 156117), (195, 108081), (351, 60045), (405, 52039), (585, 36027), (1053, 20015), (1755, 12009), (4003, 5265)]