639198

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1$

素因数の和:126

約数の個数: 64

約数和(自身を含む): 1728000

約数和(自身を除く): 1088802

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 19, 21, 27, 38, 42, 54, 57, 63, 89, 114, 126, 133, 171, 178, 189, 266, 267, 342, 378, 399, 513, 534, 623, 798, 801, 1026, 1197, 1246, 1602, 1691, 1869, 2394, 2403, 3382, 3591, 3738, 4806, 5073, 5607, 7182, 10146, 11214, 11837, 15219, 16821, 23674, 30438, 33642, 35511, 45657, 71022, 91314, 106533, 213066, 319599, 639198]

約数ペア:

[(1, 639198), (2, 319599), (3, 213066), (6, 106533), (7, 91314), (9, 71022), (14, 45657), (18, 35511), (19, 33642), (21, 30438), (27, 23674), (38, 16821), (42, 15219), (54, 11837), (57, 11214), (63, 10146), (89, 7182), (114, 5607), (126, 5073), (133, 4806), (171, 3738), (178, 3591), (189, 3382), (266, 2403), (267, 2394), (342, 1869), (378, 1691), (399, 1602), (513, 1246), (534, 1197), (623, 1026), (798, 801)]