20123584400

素因数分解:

$2^4\times 5^2\times {\mathrm{439}}^1\times {\mathrm{114599}}^1$

素因数の和:115056

約数の個数: 60

約数和(自身を含む): 48457464000

約数和(自身を除く): 28333879600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 439, 878, 1756, 2195, 3512, 4390, 7024, 8780, 10975, 17560, 21950, 35120, 43900, 87800, 114599, 175600, 229198, 458396, 572995, 916792, 1145990, 1833584, 2291980, 2864975, 4583960, 5729950, 9167920, 11459900, 22919800, 45839600, 50308961, 100617922, 201235844, 251544805, 402471688, 503089610, 804943376, 1006179220, 1257724025, 2012358440, 2515448050, 4024716880, 5030896100, 10061792200, 20123584400]

約数ペア:

[(1, 20123584400), (2, 10061792200), (4, 5030896100), (5, 4024716880), (8, 2515448050), (10, 2012358440), (16, 1257724025), (20, 1006179220), (25, 804943376), (40, 503089610), (50, 402471688), (80, 251544805), (100, 201235844), (200, 100617922), (400, 50308961), (439, 45839600), (878, 22919800), (1756, 11459900), (2195, 9167920), (3512, 5729950), (4390, 4583960), (7024, 2864975), (8780, 2291980), (10975, 1833584), (17560, 1145990), (21950, 916792), (35120, 572995), (43900, 458396), (87800, 229198), (114599, 175600)]