81211735

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{1493}}^1$

素因数の和:1575

約数の個数: 32

約数和(自身を含む): 113591808

約数和(自身を除く): 32380073

約数列:

[1, 5, 11, 23, 43, 55, 115, 215, 253, 473, 989, 1265, 1493, 2365, 4945, 7465, 10879, 16423, 34339, 54395, 64199, 82115, 171695, 320995, 377729, 706189, 1476577, 1888645, 3530945, 7382885, 16242347, 81211735]

約数ペア:

[(1, 81211735), (5, 16242347), (11, 7382885), (23, 3530945), (43, 1888645), (55, 1476577), (115, 706189), (215, 377729), (253, 320995), (473, 171695), (989, 82115), (1265, 64199), (1493, 54395), (2365, 34339), (4945, 16423), (7465, 10879)]