20139840040

素因数分解:

$2^3\times 5^1\times {\mathrm{401}}^1\times {\mathrm{1255601}}^1$

素因数の和:1256013

約数の個数: 32

約数和(自身を含む): 45427680360

約数和(自身を除く): 25287840320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 401, 802, 1604, 2005, 3208, 4010, 8020, 16040, 1255601, 2511202, 5022404, 6278005, 10044808, 12556010, 25112020, 50224040, 503496001, 1006992002, 2013984004, 2517480005, 4027968008, 5034960010, 10069920020, 20139840040]

約数ペア:

[(1, 20139840040), (2, 10069920020), (4, 5034960010), (5, 4027968008), (8, 2517480005), (10, 2013984004), (20, 1006992002), (40, 503496001), (401, 50224040), (802, 25112020), (1604, 12556010), (2005, 10044808), (3208, 6278005), (4010, 5022404), (8020, 2511202), (16040, 1255601)]