21184324

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{157}}^1$

素因数の和:308

約数の個数: 48

約数和(自身を含む): 43886080

約数和(自身を除く): 22701756

約数列:

[1, 2, 4, 7, 14, 28, 61, 79, 122, 157, 158, 244, 314, 316, 427, 553, 628, 854, 1099, 1106, 1708, 2198, 2212, 4396, 4819, 9577, 9638, 12403, 19154, 19276, 24806, 33733, 38308, 49612, 67039, 67466, 86821, 134078, 134932, 173642, 268156, 347284, 756583, 1513166, 3026332, 5296081, 10592162, 21184324]

約数ペア:

[(1, 21184324), (2, 10592162), (4, 5296081), (7, 3026332), (14, 1513166), (28, 756583), (61, 347284), (79, 268156), (122, 173642), (157, 134932), (158, 134078), (244, 86821), (314, 67466), (316, 67039), (427, 49612), (553, 38308), (628, 33733), (854, 24806), (1099, 19276), (1106, 19154), (1708, 12403), (2198, 9638), (2212, 9577), (4396, 4819)]