20644988

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1319}}^1$

素因数の和:1386

約数の個数: 48

約数和(自身を含む): 45534720

約数和(自身を除く): 24889732

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 43, 52, 86, 91, 172, 182, 301, 364, 559, 602, 1118, 1204, 1319, 2236, 2638, 3913, 5276, 7826, 9233, 15652, 17147, 18466, 34294, 36932, 56717, 68588, 113434, 120029, 226868, 240058, 397019, 480116, 737321, 794038, 1474642, 1588076, 2949284, 5161247, 10322494, 20644988]

約数ペア:

[(1, 20644988), (2, 10322494), (4, 5161247), (7, 2949284), (13, 1588076), (14, 1474642), (26, 794038), (28, 737321), (43, 480116), (52, 397019), (86, 240058), (91, 226868), (172, 120029), (182, 113434), (301, 68588), (364, 56717), (559, 36932), (602, 34294), (1118, 18466), (1204, 17147), (1319, 15652), (2236, 9233), (2638, 7826), (3913, 5276)]