664496

素因数分解:

$2^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{349}}^1$

素因数の和:381

約数の個数: 40

約数和(自身を含む): 1562400

約数和(自身を除く): 897904

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 34, 56, 68, 112, 119, 136, 238, 272, 349, 476, 698, 952, 1396, 1904, 2443, 2792, 4886, 5584, 5933, 9772, 11866, 19544, 23732, 39088, 41531, 47464, 83062, 94928, 166124, 332248, 664496]

約数ペア:

[(1, 664496), (2, 332248), (4, 166124), (7, 94928), (8, 83062), (14, 47464), (16, 41531), (17, 39088), (28, 23732), (34, 19544), (56, 11866), (68, 9772), (112, 5933), (119, 5584), (136, 4886), (238, 2792), (272, 2443), (349, 1904), (476, 1396), (698, 952)]