17215821

素因数分解:

$3^5\times 7^1\times {\mathrm{29}}^1\times {\mathrm{349}}^1$

素因数の和:400

約数の個数: 48

約数和(自身を含む): 30576000

約数和(自身を除く): 13360179

約数列:

[1, 3, 7, 9, 21, 27, 29, 63, 81, 87, 189, 203, 243, 261, 349, 567, 609, 783, 1047, 1701, 1827, 2349, 2443, 3141, 5481, 7047, 7329, 9423, 10121, 16443, 21987, 28269, 30363, 49329, 65961, 70847, 84807, 91089, 197883, 212541, 273267, 593649, 637623, 819801, 1912869, 2459403, 5738607, 17215821]

約数ペア:

[(1, 17215821), (3, 5738607), (7, 2459403), (9, 1912869), (21, 819801), (27, 637623), (29, 593649), (63, 273267), (81, 212541), (87, 197883), (189, 91089), (203, 84807), (243, 70847), (261, 65961), (349, 49329), (567, 30363), (609, 28269), (783, 21987), (1047, 16443), (1701, 10121), (1827, 9423), (2349, 7329), (2443, 7047), (3141, 5481)]