20977515

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{11953}}^1$

素因数の和:11980

約数の個数: 32

約数和(自身を含む): 40165440

約数和(自身を除く): 19187925

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 117, 135, 195, 351, 585, 1755, 11953, 35859, 59765, 107577, 155389, 179295, 322731, 466167, 537885, 776945, 1398501, 1613655, 2330835, 4195503, 6992505, 20977515]

約数ペア:

[(1, 20977515), (3, 6992505), (5, 4195503), (9, 2330835), (13, 1613655), (15, 1398501), (27, 776945), (39, 537885), (45, 466167), (65, 322731), (117, 179295), (135, 155389), (195, 107577), (351, 59765), (585, 35859), (1755, 11953)]