21000638883

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{613}}^1\times {\mathrm{13709}}^1$

素因数の和:14356

約数の個数: 48

約数和(自身を含む): 34547225760

約数和(自身を除く): 13546586877

約数列:

[1, 3, 7, 17, 21, 49, 51, 119, 147, 357, 613, 833, 1839, 2499, 4291, 10421, 12873, 13709, 30037, 31263, 41127, 72947, 90111, 95963, 218841, 233053, 287889, 510629, 671741, 699159, 1531887, 1631371, 2015223, 4894113, 8403617, 11419597, 25210851, 34258791, 58825319, 142861489, 176475957, 411777233, 428584467, 1000030423, 1235331699, 3000091269, 7000212961, 21000638883]

約数ペア:

[(1, 21000638883), (3, 7000212961), (7, 3000091269), (17, 1235331699), (21, 1000030423), (49, 428584467), (51, 411777233), (119, 176475957), (147, 142861489), (357, 58825319), (613, 34258791), (833, 25210851), (1839, 11419597), (2499, 8403617), (4291, 4894113), (10421, 2015223), (12873, 1631371), (13709, 1531887), (30037, 699159), (31263, 671741), (41127, 510629), (72947, 287889), (90111, 233053), (95963, 218841)]