19870029

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{12911}}^1$

素因数の和:12942

約数の個数: 20

約数和(自身を含む): 31247040

約数和(自身を除く): 11377011

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 12911, 38733, 116199, 245309, 348597, 735927, 1045791, 2207781, 6623343, 19870029]

約数ペア:

[(1, 19870029), (3, 6623343), (9, 2207781), (19, 1045791), (27, 735927), (57, 348597), (81, 245309), (171, 116199), (513, 38733), (1539, 12911)]