308840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{1103}}^1$

素因数の和:1121

約数の個数: 32

約数和(自身を含む): 794880

約数和(自身を除く): 486040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 1103, 2206, 4412, 5515, 7721, 8824, 11030, 15442, 22060, 30884, 38605, 44120, 61768, 77210, 154420, 308840]

約数ペア:

[(1, 308840), (2, 154420), (4, 77210), (5, 61768), (7, 44120), (8, 38605), (10, 30884), (14, 22060), (20, 15442), (28, 11030), (35, 8824), (40, 7721), (56, 5515), (70, 4412), (140, 2206), (280, 1103)]