19626540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{3001}}^1$

素因数の和:3122

約数の個数: 48

約数和(自身を含む): 55476960

約数和(自身を除く): 35850420

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 109, 218, 327, 436, 545, 654, 1090, 1308, 1635, 2180, 3001, 3270, 6002, 6540, 9003, 12004, 15005, 18006, 30010, 36012, 45015, 60020, 90030, 180060, 327109, 654218, 981327, 1308436, 1635545, 1962654, 3271090, 3925308, 4906635, 6542180, 9813270, 19626540]

約数ペア:

[(1, 19626540), (2, 9813270), (3, 6542180), (4, 4906635), (5, 3925308), (6, 3271090), (10, 1962654), (12, 1635545), (15, 1308436), (20, 981327), (30, 654218), (60, 327109), (109, 180060), (218, 90030), (327, 60020), (436, 45015), (545, 36012), (654, 30010), (1090, 18006), (1308, 15005), (1635, 12004), (2180, 9003), (3001, 6540), (3270, 6002)]