18910850

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{761}}^1$

素因数の和:851

約数の個数: 48

約数和(自身を含む): 40818816

約数和(自身を除く): 21907966

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 71, 142, 175, 350, 355, 497, 710, 761, 994, 1522, 1775, 2485, 3550, 3805, 4970, 5327, 7610, 10654, 12425, 19025, 24850, 26635, 38050, 53270, 54031, 108062, 133175, 266350, 270155, 378217, 540310, 756434, 1350775, 1891085, 2701550, 3782170, 9455425, 18910850]

約数ペア:

[(1, 18910850), (2, 9455425), (5, 3782170), (7, 2701550), (10, 1891085), (14, 1350775), (25, 756434), (35, 540310), (50, 378217), (70, 270155), (71, 266350), (142, 133175), (175, 108062), (350, 54031), (355, 53270), (497, 38050), (710, 26635), (761, 24850), (994, 19025), (1522, 12425), (1775, 10654), (2485, 7610), (3550, 5327), (3805, 4970)]