999184880

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{204751}}^1$

素因数の和:204825

約数の個数: 40

約数和(自身を含む): 2361200064

約数和(自身を除く): 1362015184

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 204751, 409502, 819004, 1023755, 1638008, 2047510, 3276016, 4095020, 8190040, 12489811, 16380080, 24979622, 49959244, 62449055, 99918488, 124898110, 199836976, 249796220, 499592440, 999184880]

約数ペア:

[(1, 999184880), (2, 499592440), (4, 249796220), (5, 199836976), (8, 124898110), (10, 99918488), (16, 62449055), (20, 49959244), (40, 24979622), (61, 16380080), (80, 12489811), (122, 8190040), (244, 4095020), (305, 3276016), (488, 2047510), (610, 1638008), (976, 1023755), (1220, 819004), (2440, 409502), (4880, 204751)]