19988241

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{347}}^1$

素因数の和:581

約数の個数: 32

約数和(自身を含む): 33051648

約数和(自身を除く): 13063407

約数列:

[1, 3, 7, 13, 21, 39, 91, 211, 273, 347, 633, 1041, 1477, 2429, 2743, 4431, 4511, 7287, 8229, 13533, 19201, 31577, 57603, 73217, 94731, 219651, 512519, 951821, 1537557, 2855463, 6662747, 19988241]

約数ペア:

[(1, 19988241), (3, 6662747), (7, 2855463), (13, 1537557), (21, 951821), (39, 512519), (91, 219651), (211, 94731), (273, 73217), (347, 57603), (633, 31577), (1041, 19201), (1477, 13533), (2429, 8229), (2743, 7287), (4431, 4511)]