2561497768

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{123007}}^1$

素因数の和:123169

約数の個数: 32

約数和(自身を含む): 5092531200

約数和(自身を除く): 2531033432

約数列:

[1, 2, 4, 8, 19, 38, 76, 137, 152, 274, 548, 1096, 2603, 5206, 10412, 20824, 123007, 246014, 492028, 984056, 2337133, 4674266, 9348532, 16851959, 18697064, 33703918, 67407836, 134815672, 320187221, 640374442, 1280748884, 2561497768]

約数ペア:

[(1, 2561497768), (2, 1280748884), (4, 640374442), (8, 320187221), (19, 134815672), (38, 67407836), (76, 33703918), (137, 18697064), (152, 16851959), (274, 9348532), (548, 4674266), (1096, 2337133), (2603, 984056), (5206, 492028), (10412, 246014), (20824, 123007)]