261333136

素因数分解:

$2^4\times {\mathrm{83}}^1\times {\mathrm{307}}^1\times {\mathrm{641}}^1$

素因数の和:1039

約数の個数: 40

約数和(自身を含む): 514904544

約数和(自身を除く): 253571408

約数列:

[1, 2, 4, 8, 16, 83, 166, 307, 332, 614, 641, 664, 1228, 1282, 1328, 2456, 2564, 4912, 5128, 10256, 25481, 50962, 53203, 101924, 106406, 196787, 203848, 212812, 393574, 407696, 425624, 787148, 851248, 1574296, 3148592, 16333321, 32666642, 65333284, 130666568, 261333136]

約数ペア:

[(1, 261333136), (2, 130666568), (4, 65333284), (8, 32666642), (16, 16333321), (83, 3148592), (166, 1574296), (307, 851248), (332, 787148), (614, 425624), (641, 407696), (664, 393574), (1228, 212812), (1282, 203848), (1328, 196787), (2456, 106406), (2564, 101924), (4912, 53203), (5128, 50962), (10256, 25481)]