15795220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{439}}^1$

素因数の和:712

約数の個数: 48

約数和(自身を含む): 38142720

約数和(自身を除く): 22347500

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 257, 439, 514, 878, 1028, 1285, 1756, 1799, 2195, 2570, 3073, 3598, 4390, 5140, 6146, 7196, 8780, 8995, 12292, 15365, 17990, 30730, 35980, 61460, 112823, 225646, 451292, 564115, 789761, 1128230, 1579522, 2256460, 3159044, 3948805, 7897610, 15795220]

約数ペア:

[(1, 15795220), (2, 7897610), (4, 3948805), (5, 3159044), (7, 2256460), (10, 1579522), (14, 1128230), (20, 789761), (28, 564115), (35, 451292), (70, 225646), (140, 112823), (257, 61460), (439, 35980), (514, 30730), (878, 17990), (1028, 15365), (1285, 12292), (1756, 8995), (1799, 8780), (2195, 7196), (2570, 6146), (3073, 5140), (3598, 4390)]