18951387

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{211}}^1$

素因数の和:288

約数の個数: 48

約数和(自身を含む): 32481792

約数和(自身を除く): 13530405

約数列:

[1, 3, 7, 13, 21, 39, 47, 49, 91, 141, 147, 211, 273, 329, 611, 633, 637, 987, 1477, 1833, 1911, 2303, 2743, 4277, 4431, 6909, 8229, 9917, 10339, 12831, 19201, 29751, 29939, 31017, 57603, 69419, 89817, 128921, 134407, 208257, 386763, 403221, 485933, 902447, 1457799, 2707341, 6317129, 18951387]

約数ペア:

[(1, 18951387), (3, 6317129), (7, 2707341), (13, 1457799), (21, 902447), (39, 485933), (47, 403221), (49, 386763), (91, 208257), (141, 134407), (147, 128921), (211, 89817), (273, 69419), (329, 57603), (611, 31017), (633, 29939), (637, 29751), (987, 19201), (1477, 12831), (1833, 10339), (1911, 9917), (2303, 8229), (2743, 6909), (4277, 4431)]