21319558

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{419}}^1$

素因数の和:556

約数の個数: 32

約数和(自身を含む): 36691200

約数和(自身を除く): 15371642

約数列:

[1, 2, 13, 19, 26, 38, 103, 206, 247, 419, 494, 838, 1339, 1957, 2678, 3914, 5447, 7961, 10894, 15922, 25441, 43157, 50882, 86314, 103493, 206986, 561041, 819983, 1122082, 1639966, 10659779, 21319558]

約数ペア:

[(1, 21319558), (2, 10659779), (13, 1639966), (19, 1122082), (26, 819983), (38, 561041), (103, 206986), (206, 103493), (247, 86314), (419, 50882), (494, 43157), (838, 25441), (1339, 15922), (1957, 10894), (2678, 7961), (3914, 5447)]