81817456

素因数分解:

$2^4\times 7^2\times {\mathrm{79}}^1\times {\mathrm{1321}}^1$

素因数の和:1422

約数の個数: 60

約数和(自身を含む): 186877920

約数和(自身を除く): 105060464

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 79, 98, 112, 158, 196, 316, 392, 553, 632, 784, 1106, 1264, 1321, 2212, 2642, 3871, 4424, 5284, 7742, 8848, 9247, 10568, 15484, 18494, 21136, 30968, 36988, 61936, 64729, 73976, 104359, 129458, 147952, 208718, 258916, 417436, 517832, 730513, 834872, 1035664, 1461026, 1669744, 2922052, 5113591, 5844104, 10227182, 11688208, 20454364, 40908728, 81817456]

約数ペア:

[(1, 81817456), (2, 40908728), (4, 20454364), (7, 11688208), (8, 10227182), (14, 5844104), (16, 5113591), (28, 2922052), (49, 1669744), (56, 1461026), (79, 1035664), (98, 834872), (112, 730513), (158, 517832), (196, 417436), (316, 258916), (392, 208718), (553, 147952), (632, 129458), (784, 104359), (1106, 73976), (1264, 64729), (1321, 61936), (2212, 36988), (2642, 30968), (3871, 21136), (4424, 18494), (5284, 15484), (7742, 10568), (8848, 9247)]