20371876

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{257}}^1$

素因数の和:436

約数の個数: 48

約数和(自身を含む): 43344000

約数和(自身を除く): 22972124

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 149, 257, 266, 298, 514, 532, 596, 1028, 1043, 1799, 2086, 2831, 3598, 4172, 4883, 5662, 7196, 9766, 11324, 19532, 19817, 34181, 38293, 39634, 68362, 76586, 79268, 136724, 153172, 268051, 536102, 727567, 1072204, 1455134, 2910268, 5092969, 10185938, 20371876]

約数ペア:

[(1, 20371876), (2, 10185938), (4, 5092969), (7, 2910268), (14, 1455134), (19, 1072204), (28, 727567), (38, 536102), (76, 268051), (133, 153172), (149, 136724), (257, 79268), (266, 76586), (298, 68362), (514, 39634), (532, 38293), (596, 34181), (1028, 19817), (1043, 19532), (1799, 11324), (2086, 9766), (2831, 7196), (3598, 5662), (4172, 4883)]