20531745

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{11699}}^1$

素因数の和:11726

約数の個数: 32

約数和(自身を含む): 39312000

約数和(自身を除く): 18780255

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 117, 135, 195, 351, 585, 1755, 11699, 35097, 58495, 105291, 152087, 175485, 315873, 456261, 526455, 760435, 1368783, 1579365, 2281305, 4106349, 6843915, 20531745]

約数ペア:

[(1, 20531745), (3, 6843915), (5, 4106349), (9, 2281305), (13, 1579365), (15, 1368783), (27, 760435), (39, 526455), (45, 456261), (65, 315873), (117, 175485), (135, 152087), (195, 105291), (351, 58495), (585, 35097), (1755, 11699)]