20834460

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{283}}^1\times {\mathrm{409}}^1$

素因数の和:707

約数の個数: 72

約数和(自身を含む): 63576240

約数和(自身を除く): 42741780

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 283, 409, 566, 818, 849, 1132, 1227, 1415, 1636, 1698, 2045, 2454, 2547, 2830, 3396, 3681, 4090, 4245, 4908, 5094, 5660, 6135, 7362, 8180, 8490, 10188, 12270, 12735, 14724, 16980, 18405, 24540, 25470, 36810, 50940, 73620, 115747, 231494, 347241, 462988, 578735, 694482, 1041723, 1157470, 1388964, 1736205, 2083446, 2314940, 3472410, 4166892, 5208615, 6944820, 10417230, 20834460]

約数ペア:

[(1, 20834460), (2, 10417230), (3, 6944820), (4, 5208615), (5, 4166892), (6, 3472410), (9, 2314940), (10, 2083446), (12, 1736205), (15, 1388964), (18, 1157470), (20, 1041723), (30, 694482), (36, 578735), (45, 462988), (60, 347241), (90, 231494), (180, 115747), (283, 73620), (409, 50940), (566, 36810), (818, 25470), (849, 24540), (1132, 18405), (1227, 16980), (1415, 14724), (1636, 12735), (1698, 12270), (2045, 10188), (2454, 8490), (2547, 8180), (2830, 7362), (3396, 6135), (3681, 5660), (4090, 5094), (4245, 4908)]