20388335

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{103}}^1$

素因数の和:239

約数の個数: 32

約数和(自身を含む): 27855360

約数和(自身を除く): 7467025

約数列:

[1, 5, 11, 55, 59, 61, 103, 295, 305, 515, 649, 671, 1133, 3245, 3355, 3599, 5665, 6077, 6283, 17995, 30385, 31415, 39589, 66847, 69113, 197945, 334235, 345565, 370697, 1853485, 4077667, 20388335]

約数ペア:

[(1, 20388335), (5, 4077667), (11, 1853485), (55, 370697), (59, 345565), (61, 334235), (103, 197945), (295, 69113), (305, 66847), (515, 39589), (649, 31415), (671, 30385), (1133, 17995), (3245, 6283), (3355, 6077), (3599, 5665)]