20008977404

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{191}}^1\times {\mathrm{4999}}^1$

素因数の和:5251

約数の個数: 72

約数和(自身を含む): 39352320000

約数和(自身を除く): 19343342596

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 124, 169, 191, 338, 382, 403, 676, 764, 806, 1612, 2483, 4966, 4999, 5239, 5921, 9932, 9998, 10478, 11842, 19996, 20956, 23684, 32279, 64558, 64987, 76973, 129116, 129974, 153946, 154969, 259948, 307892, 309938, 619876, 844831, 954809, 1000649, 1689662, 1909618, 2001298, 2014597, 3379324, 3819236, 4002596, 4029194, 8058388, 12412517, 24825034, 26189761, 29599079, 49650068, 52379522, 59198158, 104759044, 118396316, 161362721, 322725442, 384788027, 645450884, 769576054, 1539152108, 5002244351, 10004488702, 20008977404]

約数ペア:

[(1, 20008977404), (2, 10004488702), (4, 5002244351), (13, 1539152108), (26, 769576054), (31, 645450884), (52, 384788027), (62, 322725442), (124, 161362721), (169, 118396316), (191, 104759044), (338, 59198158), (382, 52379522), (403, 49650068), (676, 29599079), (764, 26189761), (806, 24825034), (1612, 12412517), (2483, 8058388), (4966, 4029194), (4999, 4002596), (5239, 3819236), (5921, 3379324), (9932, 2014597), (9998, 2001298), (10478, 1909618), (11842, 1689662), (19996, 1000649), (20956, 954809), (23684, 844831), (32279, 619876), (64558, 309938), (64987, 307892), (76973, 259948), (129116, 154969), (129974, 153946)]