28158095

素因数分解:

$5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{263}}^1$

素因数の和:324

約数の個数: 48

約数和(自身を含む): 43338240

約数和(自身を除く): 15180145

約数列:

[1, 5, 7, 19, 23, 35, 49, 95, 115, 133, 161, 245, 263, 437, 665, 805, 931, 1127, 1315, 1841, 2185, 3059, 4655, 4997, 5635, 6049, 9205, 12887, 15295, 21413, 24985, 30245, 34979, 42343, 64435, 107065, 114931, 174895, 211715, 244853, 296401, 574655, 804517, 1224265, 1482005, 4022585, 5631619, 28158095]

約数ペア:

[(1, 28158095), (5, 5631619), (7, 4022585), (19, 1482005), (23, 1224265), (35, 804517), (49, 574655), (95, 296401), (115, 244853), (133, 211715), (161, 174895), (245, 114931), (263, 107065), (437, 64435), (665, 42343), (805, 34979), (931, 30245), (1127, 24985), (1315, 21413), (1841, 15295), (2185, 12887), (3059, 9205), (4655, 6049), (4997, 5635)]