209420680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{821}}^1\times {\mathrm{911}}^1$

素因数の和:1750

約数の個数: 64

約数和(自身を含む): 539758080

約数和(自身を除く): 330337400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 821, 911, 1642, 1822, 3284, 3644, 4105, 4555, 5747, 6377, 6568, 7288, 8210, 9110, 11494, 12754, 16420, 18220, 22988, 25508, 28735, 31885, 32840, 36440, 45976, 51016, 57470, 63770, 114940, 127540, 229880, 255080, 747931, 1495862, 2991724, 3739655, 5235517, 5983448, 7479310, 10471034, 14958620, 20942068, 26177585, 29917240, 41884136, 52355170, 104710340, 209420680]

約数ペア:

[(1, 209420680), (2, 104710340), (4, 52355170), (5, 41884136), (7, 29917240), (8, 26177585), (10, 20942068), (14, 14958620), (20, 10471034), (28, 7479310), (35, 5983448), (40, 5235517), (56, 3739655), (70, 2991724), (140, 1495862), (280, 747931), (821, 255080), (911, 229880), (1642, 127540), (1822, 114940), (3284, 63770), (3644, 57470), (4105, 51016), (4555, 45976), (5747, 36440), (6377, 32840), (6568, 31885), (7288, 28735), (8210, 25508), (9110, 22988), (11494, 18220), (12754, 16420)]