19212921

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23459}}^1$

素因数の和:23485

約数の個数: 24

約数和(自身を含む): 34157760

約数和(自身を除く): 14944839

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 23459, 70377, 164213, 211131, 304967, 492639, 914901, 1477917, 2134769, 2744703, 6404307, 19212921]

約数ペア:

[(1, 19212921), (3, 6404307), (7, 2744703), (9, 2134769), (13, 1477917), (21, 914901), (39, 492639), (63, 304967), (91, 211131), (117, 164213), (273, 70377), (819, 23459)]