778860880

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{198689}}^1$

素因数の和:198716

約数の個数: 60

約数和(自身を含む): 2106511380

約数和(自身を除く): 1327650500

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 198689, 397378, 794756, 993445, 1390823, 1589512, 1986890, 2781646, 3179024, 3973780, 5563292, 6954115, 7947560, 9735761, 11126584, 13908230, 15895120, 19471522, 22253168, 27816460, 38943044, 48678805, 55632920, 77886088, 97357610, 111265840, 155772176, 194715220, 389430440, 778860880]

約数ペア:

[(1, 778860880), (2, 389430440), (4, 194715220), (5, 155772176), (7, 111265840), (8, 97357610), (10, 77886088), (14, 55632920), (16, 48678805), (20, 38943044), (28, 27816460), (35, 22253168), (40, 19471522), (49, 15895120), (56, 13908230), (70, 11126584), (80, 9735761), (98, 7947560), (112, 6954115), (140, 5563292), (196, 3973780), (245, 3179024), (280, 2781646), (392, 1986890), (490, 1589512), (560, 1390823), (784, 993445), (980, 794756), (1960, 397378), (3920, 198689)]