220178985

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{3907}}^1$

素因数の和:3962

約数の個数: 48

約数和(自身を含む): 403118016

約数和(自身を除く): 182939031

約数列:

[1, 3, 5, 13, 15, 17, 39, 51, 65, 85, 195, 221, 255, 289, 663, 867, 1105, 1445, 3315, 3757, 3907, 4335, 11271, 11721, 18785, 19535, 50791, 56355, 58605, 66419, 152373, 199257, 253955, 332095, 761865, 863447, 996285, 1129123, 2590341, 3387369, 4317235, 5645615, 12951705, 14678599, 16936845, 44035797, 73392995, 220178985]

約数ペア:

[(1, 220178985), (3, 73392995), (5, 44035797), (13, 16936845), (15, 14678599), (17, 12951705), (39, 5645615), (51, 4317235), (65, 3387369), (85, 2590341), (195, 1129123), (221, 996285), (255, 863447), (289, 761865), (663, 332095), (867, 253955), (1105, 199257), (1445, 152373), (3315, 66419), (3757, 58605), (3907, 56355), (4335, 50791), (11271, 19535), (11721, 18785)]