27981940

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{4079}}^1$

素因数の和:4109

約数の個数: 48

約数和(自身を含む): 68544000

約数和(自身を除く): 40562060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1715, 3430, 4079, 6860, 8158, 16316, 20395, 28553, 40790, 57106, 81580, 114212, 142765, 199871, 285530, 399742, 571060, 799484, 999355, 1399097, 1998710, 2798194, 3997420, 5596388, 6995485, 13990970, 27981940]

約数ペア:

[(1, 27981940), (2, 13990970), (4, 6995485), (5, 5596388), (7, 3997420), (10, 2798194), (14, 1998710), (20, 1399097), (28, 999355), (35, 799484), (49, 571060), (70, 399742), (98, 285530), (140, 199871), (196, 142765), (245, 114212), (343, 81580), (490, 57106), (686, 40790), (980, 28553), (1372, 20395), (1715, 16316), (3430, 8158), (4079, 6860)]