128723931

素因数分解:

$3^3\times 7^2\times {\mathrm{149}}^1\times {\mathrm{653}}^1$

素因数の和:825

約数の個数: 48

約数和(自身を含む): 223668000

約数和(自身を除く): 94944069

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 149, 189, 441, 447, 653, 1043, 1323, 1341, 1959, 3129, 4023, 4571, 5877, 7301, 9387, 13713, 17631, 21903, 28161, 31997, 41139, 65709, 95991, 97297, 123417, 197127, 287973, 291891, 681079, 863919, 875673, 2043237, 2627019, 4767553, 6129711, 14302659, 18389133, 42907977, 128723931]

約数ペア:

[(1, 128723931), (3, 42907977), (7, 18389133), (9, 14302659), (21, 6129711), (27, 4767553), (49, 2627019), (63, 2043237), (147, 875673), (149, 863919), (189, 681079), (441, 291891), (447, 287973), (653, 197127), (1043, 123417), (1323, 97297), (1341, 95991), (1959, 65709), (3129, 41139), (4023, 31997), (4571, 28161), (5877, 21903), (7301, 17631), (9387, 13713)]