19937745

素因数分解:

$3^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{2591}}^1$

素因数の和:2627

約数の個数: 40

約数和(自身を含む): 37635840

約数和(自身を除く): 17698095

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 81, 95, 135, 171, 285, 405, 513, 855, 1539, 2565, 2591, 7695, 7773, 12955, 23319, 38865, 49229, 69957, 116595, 147687, 209871, 246145, 349785, 443061, 738435, 1049355, 1329183, 2215305, 3987549, 6645915, 19937745]

約数ペア:

[(1, 19937745), (3, 6645915), (5, 3987549), (9, 2215305), (15, 1329183), (19, 1049355), (27, 738435), (45, 443061), (57, 349785), (81, 246145), (95, 209871), (135, 147687), (171, 116595), (285, 69957), (405, 49229), (513, 38865), (855, 23319), (1539, 12955), (2565, 7773), (2591, 7695)]