20161755620

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{173}}^1\times {\mathrm{233}}^1\times {\mathrm{281}}^1$

素因数の和:785

約数の個数: 96

約数和(自身を含む): 43401627360

約数和(自身を除く): 23239871740

約数列:

[1, 2, 4, 5, 10, 20, 89, 173, 178, 233, 281, 346, 356, 445, 466, 562, 692, 865, 890, 932, 1124, 1165, 1405, 1730, 1780, 2330, 2810, 3460, 4660, 5620, 15397, 20737, 25009, 30794, 40309, 41474, 48613, 50018, 61588, 65473, 76985, 80618, 82948, 97226, 100036, 103685, 125045, 130946, 153970, 161236, 194452, 201545, 207370, 243065, 250090, 261892, 307940, 327365, 403090, 414740, 486130, 500180, 654730, 806180, 972260, 1309460, 3587501, 4326557, 5827097, 7175002, 8653114, 11326829, 11654194, 14350004, 17306228, 17937505, 21632785, 22653658, 23308388, 29135485, 35875010, 43265570, 45307316, 56634145, 58270970, 71750020, 86531140, 113268290, 116541940, 226536580, 1008087781, 2016175562, 4032351124, 5040438905, 10080877810, 20161755620]

約数ペア:

[(1, 20161755620), (2, 10080877810), (4, 5040438905), (5, 4032351124), (10, 2016175562), (20, 1008087781), (89, 226536580), (173, 116541940), (178, 113268290), (233, 86531140), (281, 71750020), (346, 58270970), (356, 56634145), (445, 45307316), (466, 43265570), (562, 35875010), (692, 29135485), (865, 23308388), (890, 22653658), (932, 21632785), (1124, 17937505), (1165, 17306228), (1405, 14350004), (1730, 11654194), (1780, 11326829), (2330, 8653114), (2810, 7175002), (3460, 5827097), (4660, 4326557), (5620, 3587501), (15397, 1309460), (20737, 972260), (25009, 806180), (30794, 654730), (40309, 500180), (41474, 486130), (48613, 414740), (50018, 403090), (61588, 327365), (65473, 307940), (76985, 261892), (80618, 250090), (82948, 243065), (97226, 207370), (100036, 201545), (103685, 194452), (125045, 161236), (130946, 153970)]