21005310

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{8863}}^1$

素因数の和:8952

約数の個数: 32

約数和(自身を含む): 51056640

約数和(自身を除く): 30051330

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 79, 158, 237, 395, 474, 790, 1185, 2370, 8863, 17726, 26589, 44315, 53178, 88630, 132945, 265890, 700177, 1400354, 2100531, 3500885, 4201062, 7001770, 10502655, 21005310]

約数ペア:

[(1, 21005310), (2, 10502655), (3, 7001770), (5, 4201062), (6, 3500885), (10, 2100531), (15, 1400354), (30, 700177), (79, 265890), (158, 132945), (237, 88630), (395, 53178), (474, 44315), (790, 26589), (1185, 17726), (2370, 8863)]