19819215

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{491}}^1$

素因数の和:541

約数の個数: 64

約数和(自身を含む): 39674880

約数和(自身を除く): 19855665

約数列:

[1, 3, 5, 9, 13, 15, 23, 27, 39, 45, 65, 69, 115, 117, 135, 195, 207, 299, 345, 351, 491, 585, 621, 897, 1035, 1473, 1495, 1755, 2455, 2691, 3105, 4419, 4485, 6383, 7365, 8073, 11293, 13257, 13455, 19149, 22095, 31915, 33879, 40365, 56465, 57447, 66285, 95745, 101637, 146809, 169395, 172341, 287235, 304911, 440427, 508185, 734045, 861705, 1321281, 1524555, 2202135, 3963843, 6606405, 19819215]

約数ペア:

[(1, 19819215), (3, 6606405), (5, 3963843), (9, 2202135), (13, 1524555), (15, 1321281), (23, 861705), (27, 734045), (39, 508185), (45, 440427), (65, 304911), (69, 287235), (115, 172341), (117, 169395), (135, 146809), (195, 101637), (207, 95745), (299, 66285), (345, 57447), (351, 56465), (491, 40365), (585, 33879), (621, 31915), (897, 22095), (1035, 19149), (1473, 13455), (1495, 13257), (1755, 11293), (2455, 8073), (2691, 7365), (3105, 6383), (4419, 4485)]