19939528

素因数分解:

$2^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{113}}^1\times {\mathrm{137}}^1$

素因数の和:286

約数の個数: 64

約数和(自身を含む): 45308160

約数和(自身を除く): 25368632

約数列:

[1, 2, 4, 7, 8, 14, 23, 28, 46, 56, 92, 113, 137, 161, 184, 226, 274, 322, 452, 548, 644, 791, 904, 959, 1096, 1288, 1582, 1918, 2599, 3151, 3164, 3836, 5198, 6302, 6328, 7672, 10396, 12604, 15481, 18193, 20792, 22057, 25208, 30962, 36386, 44114, 61924, 72772, 88228, 108367, 123848, 145544, 176456, 216734, 356063, 433468, 712126, 866936, 1424252, 2492441, 2848504, 4984882, 9969764, 19939528]

約数ペア:

[(1, 19939528), (2, 9969764), (4, 4984882), (7, 2848504), (8, 2492441), (14, 1424252), (23, 866936), (28, 712126), (46, 433468), (56, 356063), (92, 216734), (113, 176456), (137, 145544), (161, 123848), (184, 108367), (226, 88228), (274, 72772), (322, 61924), (452, 44114), (548, 36386), (644, 30962), (791, 25208), (904, 22057), (959, 20792), (1096, 18193), (1288, 15481), (1582, 12604), (1918, 10396), (2599, 7672), (3151, 6328), (3164, 6302), (3836, 5198)]