19669640

素因数分解:

$2^3\times 5^1\times {\mathrm{349}}^1\times {\mathrm{1409}}^1$

素因数の和:1769

約数の個数: 32

約数和(自身を含む): 44415000

約数和(自身を除く): 24745360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 349, 698, 1396, 1409, 1745, 2792, 2818, 3490, 5636, 6980, 7045, 11272, 13960, 14090, 28180, 56360, 491741, 983482, 1966964, 2458705, 3933928, 4917410, 9834820, 19669640]

約数ペア:

[(1, 19669640), (2, 9834820), (4, 4917410), (5, 3933928), (8, 2458705), (10, 1966964), (20, 983482), (40, 491741), (349, 56360), (698, 28180), (1396, 14090), (1409, 13960), (1745, 11272), (2792, 7045), (2818, 6980), (3490, 5636)]