21559870

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{2141}}^1$

素因数の和:2220

約数の個数: 32

約数和(自身を含む): 41640480

約数和(自身を除く): 20080610

約数列:

[1, 2, 5, 10, 19, 38, 53, 95, 106, 190, 265, 530, 1007, 2014, 2141, 4282, 5035, 10070, 10705, 21410, 40679, 81358, 113473, 203395, 226946, 406790, 567365, 1134730, 2155987, 4311974, 10779935, 21559870]

約数ペア:

[(1, 21559870), (2, 10779935), (5, 4311974), (10, 2155987), (19, 1134730), (38, 567365), (53, 406790), (95, 226946), (106, 203395), (190, 113473), (265, 81358), (530, 40679), (1007, 21410), (2014, 10705), (2141, 10070), (4282, 5035)]