21487930

素因数分解:

$2^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1\times {\mathrm{349}}^1$

素因数の和:534

約数の個数: 32

約数和(自身を含む): 39916800

約数和(自身を除く): 18428870

約数列:

[1, 2, 5, 10, 47, 94, 131, 235, 262, 349, 470, 655, 698, 1310, 1745, 3490, 6157, 12314, 16403, 30785, 32806, 45719, 61570, 82015, 91438, 164030, 228595, 457190, 2148793, 4297586, 10743965, 21487930]

約数ペア:

[(1, 21487930), (2, 10743965), (5, 4297586), (10, 2148793), (47, 457190), (94, 228595), (131, 164030), (235, 91438), (262, 82015), (349, 61570), (470, 45719), (655, 32806), (698, 30785), (1310, 16403), (1745, 12314), (3490, 6157)]