19878339

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{163}}^1$

素因数の和:291

約数の個数: 32

約数和(自身を含む): 29756160

約数和(自身を除く): 9877821

約数列:

[1, 3, 13, 39, 53, 59, 159, 163, 177, 489, 689, 767, 2067, 2119, 2301, 3127, 6357, 8639, 9381, 9617, 25917, 28851, 40651, 112307, 121953, 125021, 336921, 375063, 509701, 1529103, 6626113, 19878339]

約数ペア:

[(1, 19878339), (3, 6626113), (13, 1529103), (39, 509701), (53, 375063), (59, 336921), (159, 125021), (163, 121953), (177, 112307), (489, 40651), (689, 28851), (767, 25917), (2067, 9617), (2119, 9381), (2301, 8639), (3127, 6357)]