28517480

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{239}}^1$

素因数の和:426

約数の個数: 64

約数和(自身を含む): 68256000

約数和(自身を除く): 39738520

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 157, 190, 239, 314, 380, 478, 628, 760, 785, 956, 1195, 1256, 1570, 1912, 2390, 2983, 3140, 4541, 4780, 5966, 6280, 9082, 9560, 11932, 14915, 18164, 22705, 23864, 29830, 36328, 37523, 45410, 59660, 75046, 90820, 119320, 150092, 181640, 187615, 300184, 375230, 712937, 750460, 1425874, 1500920, 2851748, 3564685, 5703496, 7129370, 14258740, 28517480]

約数ペア:

[(1, 28517480), (2, 14258740), (4, 7129370), (5, 5703496), (8, 3564685), (10, 2851748), (19, 1500920), (20, 1425874), (38, 750460), (40, 712937), (76, 375230), (95, 300184), (152, 187615), (157, 181640), (190, 150092), (239, 119320), (314, 90820), (380, 75046), (478, 59660), (628, 45410), (760, 37523), (785, 36328), (956, 29830), (1195, 23864), (1256, 22705), (1570, 18164), (1912, 14915), (2390, 11932), (2983, 9560), (3140, 9082), (4541, 6280), (4780, 5966)]