217873887

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{509}}^1$

素因数の和:656

約数の個数: 64

約数和(自身を含む): 387763200

約数和(自身を除く): 169889313

約数列:

[1, 3, 7, 11, 17, 21, 33, 51, 77, 109, 119, 187, 231, 327, 357, 509, 561, 763, 1199, 1309, 1527, 1853, 2289, 3563, 3597, 3927, 5559, 5599, 8393, 8653, 10689, 12971, 16797, 20383, 25179, 25959, 38913, 39193, 55481, 60571, 61149, 95183, 117579, 142681, 166443, 181713, 285549, 388367, 428043, 610291, 666281, 943177, 1165101, 1830873, 1998843, 2829531, 4272037, 6602239, 10374947, 12816111, 19806717, 31124841, 72624629, 217873887]

約数ペア:

[(1, 217873887), (3, 72624629), (7, 31124841), (11, 19806717), (17, 12816111), (21, 10374947), (33, 6602239), (51, 4272037), (77, 2829531), (109, 1998843), (119, 1830873), (187, 1165101), (231, 943177), (327, 666281), (357, 610291), (509, 428043), (561, 388367), (763, 285549), (1199, 181713), (1309, 166443), (1527, 142681), (1853, 117579), (2289, 95183), (3563, 61149), (3597, 60571), (3927, 55481), (5559, 39193), (5599, 38913), (8393, 25959), (8653, 25179), (10689, 20383), (12971, 16797)]