30905420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{16981}}^1$

素因数の和:17010

約数の個数: 48

約数和(自身を含む): 79883328

約数和(自身を除く): 48977908

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 16981, 33962, 67924, 84905, 118867, 169810, 220753, 237734, 339620, 441506, 475468, 594335, 883012, 1103765, 1188670, 1545271, 2207530, 2377340, 3090542, 4415060, 6181084, 7726355, 15452710, 30905420]

約数ペア:

[(1, 30905420), (2, 15452710), (4, 7726355), (5, 6181084), (7, 4415060), (10, 3090542), (13, 2377340), (14, 2207530), (20, 1545271), (26, 1188670), (28, 1103765), (35, 883012), (52, 594335), (65, 475468), (70, 441506), (91, 339620), (130, 237734), (140, 220753), (182, 169810), (260, 118867), (364, 84905), (455, 67924), (910, 33962), (1820, 16981)]