81205180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{25219}}^1$

素因数の和:25258

約数の個数: 48

約数和(自身を含む): 203374080

約数和(自身を除く): 122168900

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 460, 644, 805, 1610, 3220, 25219, 50438, 100876, 126095, 176533, 252190, 353066, 504380, 580037, 706132, 882665, 1160074, 1765330, 2320148, 2900185, 3530660, 4060259, 5800370, 8120518, 11600740, 16241036, 20301295, 40602590, 81205180]

約数ペア:

[(1, 81205180), (2, 40602590), (4, 20301295), (5, 16241036), (7, 11600740), (10, 8120518), (14, 5800370), (20, 4060259), (23, 3530660), (28, 2900185), (35, 2320148), (46, 1765330), (70, 1160074), (92, 882665), (115, 706132), (140, 580037), (161, 504380), (230, 353066), (322, 252190), (460, 176533), (644, 126095), (805, 100876), (1610, 50438), (3220, 25219)]