66884840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{2141}}^1$

素因数の和:2234

約数の個数: 64

約数和(自身を含む): 166561920

約数和(自身を除く): 99677080

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 71, 88, 110, 142, 220, 284, 355, 440, 568, 710, 781, 1420, 1562, 2141, 2840, 3124, 3905, 4282, 6248, 7810, 8564, 10705, 15620, 17128, 21410, 23551, 31240, 42820, 47102, 85640, 94204, 117755, 152011, 188408, 235510, 304022, 471020, 608044, 760055, 942040, 1216088, 1520110, 1672121, 3040220, 3344242, 6080440, 6688484, 8360605, 13376968, 16721210, 33442420, 66884840]

約数ペア:

[(1, 66884840), (2, 33442420), (4, 16721210), (5, 13376968), (8, 8360605), (10, 6688484), (11, 6080440), (20, 3344242), (22, 3040220), (40, 1672121), (44, 1520110), (55, 1216088), (71, 942040), (88, 760055), (110, 608044), (142, 471020), (220, 304022), (284, 235510), (355, 188408), (440, 152011), (568, 117755), (710, 94204), (781, 85640), (1420, 47102), (1562, 42820), (2141, 31240), (2840, 23551), (3124, 21410), (3905, 17128), (4282, 15620), (6248, 10705), (7810, 8564)]