21000916548

素因数分解:

$2^2\times 3^3\times {\mathrm{389}}^1\times {\mathrm{499879}}^1$

素因数の和:500281

約数の個数: 48

約数和(自身を含む): 54586896000

約数和(自身を除く): 33585979452

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 389, 778, 1167, 1556, 2334, 3501, 4668, 7002, 10503, 14004, 21006, 42012, 499879, 999758, 1499637, 1999516, 2999274, 4498911, 5998548, 8997822, 13496733, 17995644, 26993466, 53986932, 194452931, 388905862, 583358793, 777811724, 1166717586, 1750076379, 2333435172, 3500152758, 5250229137, 7000305516, 10500458274, 21000916548]

約数ペア:

[(1, 21000916548), (2, 10500458274), (3, 7000305516), (4, 5250229137), (6, 3500152758), (9, 2333435172), (12, 1750076379), (18, 1166717586), (27, 777811724), (36, 583358793), (54, 388905862), (108, 194452931), (389, 53986932), (778, 26993466), (1167, 17995644), (1556, 13496733), (2334, 8997822), (3501, 5998548), (4668, 4498911), (7002, 2999274), (10503, 1999516), (14004, 1499637), (21006, 999758), (42012, 499879)]