20947020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{353}}^1$

素因数の和:431

約数の個数: 96

約数和(自身を含む): 62802432

約数和(自身を除く): 41855412

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 43, 46, 60, 69, 86, 92, 115, 129, 138, 172, 215, 230, 258, 276, 345, 353, 430, 460, 516, 645, 690, 706, 860, 989, 1059, 1290, 1380, 1412, 1765, 1978, 2118, 2580, 2967, 3530, 3956, 4236, 4945, 5295, 5934, 7060, 8119, 9890, 10590, 11868, 14835, 15179, 16238, 19780, 21180, 24357, 29670, 30358, 32476, 40595, 45537, 48714, 59340, 60716, 75895, 81190, 91074, 97428, 121785, 151790, 162380, 182148, 227685, 243570, 303580, 349117, 455370, 487140, 698234, 910740, 1047351, 1396468, 1745585, 2094702, 3491170, 4189404, 5236755, 6982340, 10473510, 20947020]

約数ペア:

[(1, 20947020), (2, 10473510), (3, 6982340), (4, 5236755), (5, 4189404), (6, 3491170), (10, 2094702), (12, 1745585), (15, 1396468), (20, 1047351), (23, 910740), (30, 698234), (43, 487140), (46, 455370), (60, 349117), (69, 303580), (86, 243570), (92, 227685), (115, 182148), (129, 162380), (138, 151790), (172, 121785), (215, 97428), (230, 91074), (258, 81190), (276, 75895), (345, 60716), (353, 59340), (430, 48714), (460, 45537), (516, 40595), (645, 32476), (690, 30358), (706, 29670), (860, 24357), (989, 21180), (1059, 19780), (1290, 16238), (1380, 15179), (1412, 14835), (1765, 11868), (1978, 10590), (2118, 9890), (2580, 8119), (2967, 7060), (3530, 5934), (3956, 5295), (4236, 4945)]