18220449

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{367}}^1$

素因数の和:469

約数の個数: 32

約数和(自身を含む): 28026880

約数和(自身を除く): 9806431

約数列:

[1, 3, 13, 19, 39, 57, 67, 201, 247, 367, 741, 871, 1101, 1273, 2613, 3819, 4771, 6973, 14313, 16549, 20919, 24589, 49647, 73767, 90649, 271947, 319657, 467191, 958971, 1401573, 6073483, 18220449]

約数ペア:

[(1, 18220449), (3, 6073483), (13, 1401573), (19, 958971), (39, 467191), (57, 319657), (67, 271947), (201, 90649), (247, 73767), (367, 49647), (741, 24589), (871, 20919), (1101, 16549), (1273, 14313), (2613, 6973), (3819, 4771)]