21007854

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{137}}^1\times {\mathrm{1217}}^1$

素因数の和:1369

約数の個数: 48

約数和(自身を含む): 52442208

約数和(自身を除く): 31434354

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 137, 274, 411, 822, 959, 1217, 1233, 1918, 2434, 2466, 2877, 3651, 5754, 7302, 8519, 8631, 10953, 17038, 17262, 21906, 25557, 51114, 76671, 153342, 166729, 333458, 500187, 1000374, 1167103, 1500561, 2334206, 3001122, 3501309, 7002618, 10503927, 21007854]

約数ペア:

[(1, 21007854), (2, 10503927), (3, 7002618), (6, 3501309), (7, 3001122), (9, 2334206), (14, 1500561), (18, 1167103), (21, 1000374), (42, 500187), (63, 333458), (126, 166729), (137, 153342), (274, 76671), (411, 51114), (822, 25557), (959, 21906), (1217, 17262), (1233, 17038), (1918, 10953), (2434, 8631), (2466, 8519), (2877, 7302), (3651, 5754)]