821435139

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{227}}^1\times {\mathrm{809}}^1$

素因数の和:1120

約数の個数: 48

約数和(自身を含む): 1382883840

約数和(自身を除く): 561448701

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 227, 497, 639, 681, 809, 1491, 1589, 2043, 2427, 4473, 4767, 5663, 7281, 14301, 16117, 16989, 48351, 50967, 57439, 112819, 145053, 172317, 183643, 338457, 402073, 516951, 550929, 1015371, 1206219, 1285501, 1652787, 3618657, 3856503, 11569509, 13038653, 39115959, 91270571, 117347877, 273811713, 821435139]

約数ペア:

[(1, 821435139), (3, 273811713), (7, 117347877), (9, 91270571), (21, 39115959), (63, 13038653), (71, 11569509), (213, 3856503), (227, 3618657), (497, 1652787), (639, 1285501), (681, 1206219), (809, 1015371), (1491, 550929), (1589, 516951), (2043, 402073), (2427, 338457), (4473, 183643), (4767, 172317), (5663, 145053), (7281, 112819), (14301, 57439), (16117, 50967), (16989, 48351)]