21353627720

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{587}}^1\times {\mathrm{12809}}^1$

素因数の和:13478

約数の個数: 64

約数和(自身を含む): 48809174400

約数和(自身を除く): 27455546680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 587, 710, 1174, 1420, 2348, 2840, 2935, 4696, 5870, 11740, 12809, 23480, 25618, 41677, 51236, 64045, 83354, 102472, 128090, 166708, 208385, 256180, 333416, 416770, 512360, 833540, 909439, 1667080, 1818878, 3637756, 4547195, 7275512, 7518883, 9094390, 15037766, 18188780, 30075532, 36377560, 37594415, 60151064, 75188830, 150377660, 300755320, 533840693, 1067681386, 2135362772, 2669203465, 4270725544, 5338406930, 10676813860, 21353627720]

約数ペア:

[(1, 21353627720), (2, 10676813860), (4, 5338406930), (5, 4270725544), (8, 2669203465), (10, 2135362772), (20, 1067681386), (40, 533840693), (71, 300755320), (142, 150377660), (284, 75188830), (355, 60151064), (568, 37594415), (587, 36377560), (710, 30075532), (1174, 18188780), (1420, 15037766), (2348, 9094390), (2840, 7518883), (2935, 7275512), (4696, 4547195), (5870, 3637756), (11740, 1818878), (12809, 1667080), (23480, 909439), (25618, 833540), (41677, 512360), (51236, 416770), (64045, 333416), (83354, 256180), (102472, 208385), (128090, 166708)]