396072020

素因数分解:

$2^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{50909}}^1$

素因数の和:51307

約数の個数: 24

約数和(自身を含む): 833905800

約数和(自身を除く): 437833780

約数列:

[1, 2, 4, 5, 10, 20, 389, 778, 1556, 1945, 3890, 7780, 50909, 101818, 203636, 254545, 509090, 1018180, 19803601, 39607202, 79214404, 99018005, 198036010, 396072020]

約数ペア:

[(1, 396072020), (2, 198036010), (4, 99018005), (5, 79214404), (10, 39607202), (20, 19803601), (389, 1018180), (778, 509090), (1556, 254545), (1945, 203636), (3890, 101818), (7780, 50909)]