31317880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{653}}^1$

素因数の和:784

約数の個数: 64

約数和(自身を含む): 77695200

約数和(自身を除く): 46377320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 109, 110, 218, 220, 436, 440, 545, 653, 872, 1090, 1199, 1306, 2180, 2398, 2612, 3265, 4360, 4796, 5224, 5995, 6530, 7183, 9592, 11990, 13060, 14366, 23980, 26120, 28732, 35915, 47960, 57464, 71177, 71830, 142354, 143660, 284708, 287320, 355885, 569416, 711770, 782947, 1423540, 1565894, 2847080, 3131788, 3914735, 6263576, 7829470, 15658940, 31317880]

約数ペア:

[(1, 31317880), (2, 15658940), (4, 7829470), (5, 6263576), (8, 3914735), (10, 3131788), (11, 2847080), (20, 1565894), (22, 1423540), (40, 782947), (44, 711770), (55, 569416), (88, 355885), (109, 287320), (110, 284708), (218, 143660), (220, 142354), (436, 71830), (440, 71177), (545, 57464), (653, 47960), (872, 35915), (1090, 28732), (1199, 26120), (1306, 23980), (2180, 14366), (2398, 13060), (2612, 11990), (3265, 9592), (4360, 7183), (4796, 6530), (5224, 5995)]