641648

素因数分解:

$2^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{337}}^1$

素因数の和:369

約数の個数: 40

約数和(自身を含む): 1508832

約数和(自身を除く): 867184

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 34, 56, 68, 112, 119, 136, 238, 272, 337, 476, 674, 952, 1348, 1904, 2359, 2696, 4718, 5392, 5729, 9436, 11458, 18872, 22916, 37744, 40103, 45832, 80206, 91664, 160412, 320824, 641648]

約数ペア:

[(1, 641648), (2, 320824), (4, 160412), (7, 91664), (8, 80206), (14, 45832), (16, 40103), (17, 37744), (28, 22916), (34, 18872), (56, 11458), (68, 9436), (112, 5729), (119, 5392), (136, 4718), (238, 2696), (272, 2359), (337, 1904), (476, 1348), (674, 952)]