19188578

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1$

素因数の和:266

約数の個数: 32

約数和(自身を含む): 31363200

約数和(自身を除く): 12174622

約数列:

[1, 2, 23, 43, 46, 86, 89, 109, 178, 218, 989, 1978, 2047, 2507, 3827, 4094, 4687, 5014, 7654, 9374, 9701, 19402, 88021, 107801, 176042, 215602, 223123, 417143, 446246, 834286, 9594289, 19188578]

約数ペア:

[(1, 19188578), (2, 9594289), (23, 834286), (43, 446246), (46, 417143), (86, 223123), (89, 215602), (109, 176042), (178, 107801), (218, 88021), (989, 19402), (1978, 9701), (2047, 9374), (2507, 7654), (3827, 5014), (4094, 4687)]