81725679

素因数分解:

$3^4\times 7^2\times {\mathrm{59}}^1\times {\mathrm{349}}^1$

素因数の和:434

約数の個数: 60

約数和(自身を含む): 144837000

約数和(自身を除く): 63111321

約数列:

[1, 3, 7, 9, 21, 27, 49, 59, 63, 81, 147, 177, 189, 349, 413, 441, 531, 567, 1047, 1239, 1323, 1593, 2443, 2891, 3141, 3717, 3969, 4779, 7329, 8673, 9423, 11151, 17101, 20591, 21987, 26019, 28269, 33453, 51303, 61773, 65961, 78057, 144137, 153909, 185319, 197883, 234171, 432411, 461727, 555957, 1008959, 1297233, 1385181, 1667871, 3026877, 3891699, 9080631, 11675097, 27241893, 81725679]

約数ペア:

[(1, 81725679), (3, 27241893), (7, 11675097), (9, 9080631), (21, 3891699), (27, 3026877), (49, 1667871), (59, 1385181), (63, 1297233), (81, 1008959), (147, 555957), (177, 461727), (189, 432411), (349, 234171), (413, 197883), (441, 185319), (531, 153909), (567, 144137), (1047, 78057), (1239, 65961), (1323, 61773), (1593, 51303), (2443, 33453), (2891, 28269), (3141, 26019), (3717, 21987), (3969, 20591), (4779, 17101), (7329, 11151), (8673, 9423)]