20979445240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{167407}}^1$

素因数の和:167672

約数の個数: 64

約数和(自身を含む): 51046047360

約数和(自身を除く): 30066602120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 241, 260, 482, 520, 964, 1205, 1928, 2410, 3133, 4820, 6266, 9640, 12532, 15665, 25064, 31330, 62660, 125320, 167407, 334814, 669628, 837035, 1339256, 1674070, 2176291, 3348140, 4352582, 6696280, 8705164, 10881455, 17410328, 21762910, 40345087, 43525820, 80690174, 87051640, 161380348, 201725435, 322760696, 403450870, 524486131, 806901740, 1048972262, 1613803480, 2097944524, 2622430655, 4195889048, 5244861310, 10489722620, 20979445240]

約数ペア:

[(1, 20979445240), (2, 10489722620), (4, 5244861310), (5, 4195889048), (8, 2622430655), (10, 2097944524), (13, 1613803480), (20, 1048972262), (26, 806901740), (40, 524486131), (52, 403450870), (65, 322760696), (104, 201725435), (130, 161380348), (241, 87051640), (260, 80690174), (482, 43525820), (520, 40345087), (964, 21762910), (1205, 17410328), (1928, 10881455), (2410, 8705164), (3133, 6696280), (4820, 4352582), (6266, 3348140), (9640, 2176291), (12532, 1674070), (15665, 1339256), (25064, 837035), (31330, 669628), (62660, 334814), (125320, 167407)]