20165953840

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{179}}^1\times {\mathrm{45427}}^1$

素因数の和:45650

約数の個数: 80

約数和(自身を含む): 48669742080

約数和(自身を除く): 28503788240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 179, 248, 310, 358, 496, 620, 716, 895, 1240, 1432, 1790, 2480, 2864, 3580, 5549, 7160, 11098, 14320, 22196, 27745, 44392, 45427, 55490, 88784, 90854, 110980, 181708, 221960, 227135, 363416, 443920, 454270, 726832, 908540, 1408237, 1817080, 2816474, 3634160, 5632948, 7041185, 8131433, 11265896, 14082370, 16262866, 22531792, 28164740, 32525732, 40657165, 56329480, 65051464, 81314330, 112658960, 130102928, 162628660, 252074423, 325257320, 504148846, 650514640, 1008297692, 1260372115, 2016595384, 2520744230, 4033190768, 5041488460, 10082976920, 20165953840]

約数ペア:

[(1, 20165953840), (2, 10082976920), (4, 5041488460), (5, 4033190768), (8, 2520744230), (10, 2016595384), (16, 1260372115), (20, 1008297692), (31, 650514640), (40, 504148846), (62, 325257320), (80, 252074423), (124, 162628660), (155, 130102928), (179, 112658960), (248, 81314330), (310, 65051464), (358, 56329480), (496, 40657165), (620, 32525732), (716, 28164740), (895, 22531792), (1240, 16262866), (1432, 14082370), (1790, 11265896), (2480, 8131433), (2864, 7041185), (3580, 5632948), (5549, 3634160), (7160, 2816474), (11098, 1817080), (14320, 1408237), (22196, 908540), (27745, 726832), (44392, 454270), (45427, 443920), (55490, 363416), (88784, 227135), (90854, 221960), (110980, 181708)]