20280375

素因数分解:

$3^4\times 5^3\times {\mathrm{2003}}^1$

素因数の和:2030

約数の個数: 40

約数和(自身を含む): 37827504

約数和(自身を除く): 17547129

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 125, 135, 225, 375, 405, 675, 1125, 2003, 2025, 3375, 6009, 10015, 10125, 18027, 30045, 50075, 54081, 90135, 150225, 162243, 250375, 270405, 450675, 751125, 811215, 1352025, 2253375, 4056075, 6760125, 20280375]

約数ペア:

[(1, 20280375), (3, 6760125), (5, 4056075), (9, 2253375), (15, 1352025), (25, 811215), (27, 751125), (45, 450675), (75, 270405), (81, 250375), (125, 162243), (135, 150225), (225, 90135), (375, 54081), (405, 50075), (675, 30045), (1125, 18027), (2003, 10125), (2025, 10015), (3375, 6009)]