19919679

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{419}}^1$

素因数の和:511

約数の個数: 32

約数和(自身を含む): 30481920

約数和(自身を除く): 10562241

約数列:

[1, 3, 13, 23, 39, 53, 69, 159, 299, 419, 689, 897, 1219, 1257, 2067, 3657, 5447, 9637, 15847, 16341, 22207, 28911, 47541, 66621, 125281, 288691, 375843, 510761, 866073, 1532283, 6639893, 19919679]

約数ペア:

[(1, 19919679), (3, 6639893), (13, 1532283), (23, 866073), (39, 510761), (53, 375843), (69, 288691), (159, 125281), (299, 66621), (419, 47541), (689, 28911), (897, 22207), (1219, 16341), (1257, 15847), (2067, 9637), (3657, 5447)]