21000786618

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{904193}}^1$

素因数の和:904291

約数の個数: 48

約数和(自身を含む): 49477495680

約数和(自身を除く): 28476709062

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 49, 79, 98, 147, 158, 237, 294, 474, 553, 1106, 1659, 3318, 3871, 7742, 11613, 23226, 904193, 1808386, 2712579, 5425158, 6329351, 12658702, 18988053, 37976106, 44305457, 71431247, 88610914, 132916371, 142862494, 214293741, 265832742, 428587482, 500018729, 1000037458, 1500056187, 3000112374, 3500131103, 7000262206, 10500393309, 21000786618]

約数ペア:

[(1, 21000786618), (2, 10500393309), (3, 7000262206), (6, 3500131103), (7, 3000112374), (14, 1500056187), (21, 1000037458), (42, 500018729), (49, 428587482), (79, 265832742), (98, 214293741), (147, 142862494), (158, 132916371), (237, 88610914), (294, 71431247), (474, 44305457), (553, 37976106), (1106, 18988053), (1659, 12658702), (3318, 6329351), (3871, 5425158), (7742, 2712579), (11613, 1808386), (23226, 904193)]