19783257

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{563}}^1$

素因数の和:649

約数の個数: 32

約数和(自身を含む): 30699648

約数和(自身を除く): 10916391

約数列:

[1, 3, 13, 17, 39, 51, 53, 159, 221, 563, 663, 689, 901, 1689, 2067, 2703, 7319, 9571, 11713, 21957, 28713, 29839, 35139, 89517, 124423, 373269, 387907, 507263, 1163721, 1521789, 6594419, 19783257]

約数ペア:

[(1, 19783257), (3, 6594419), (13, 1521789), (17, 1163721), (39, 507263), (51, 387907), (53, 373269), (159, 124423), (221, 89517), (563, 35139), (663, 29839), (689, 28713), (901, 21957), (1689, 11713), (2067, 9571), (2703, 7319)]