28440280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{593}}^1$

素因数の和:724

約数の個数: 64

約数和(自身を含む): 70567200

約数和(自身を除く): 42126920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 109, 110, 218, 220, 436, 440, 545, 593, 872, 1090, 1186, 1199, 2180, 2372, 2398, 2965, 4360, 4744, 4796, 5930, 5995, 6523, 9592, 11860, 11990, 13046, 23720, 23980, 26092, 32615, 47960, 52184, 64637, 65230, 129274, 130460, 258548, 260920, 323185, 517096, 646370, 711007, 1292740, 1422014, 2585480, 2844028, 3555035, 5688056, 7110070, 14220140, 28440280]

約数ペア:

[(1, 28440280), (2, 14220140), (4, 7110070), (5, 5688056), (8, 3555035), (10, 2844028), (11, 2585480), (20, 1422014), (22, 1292740), (40, 711007), (44, 646370), (55, 517096), (88, 323185), (109, 260920), (110, 258548), (218, 130460), (220, 129274), (436, 65230), (440, 64637), (545, 52184), (593, 47960), (872, 32615), (1090, 26092), (1186, 23980), (1199, 23720), (2180, 13046), (2372, 11990), (2398, 11860), (2965, 9592), (4360, 6523), (4744, 5995), (4796, 5930)]