20213790880

素因数分解:

$2^5\times 5^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{41381}}^1$

素因数の和:41510

約数の個数: 96

約数和(自身を含む): 49555110528

約数和(自身を除く): 29341319648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 71, 80, 86, 142, 160, 172, 215, 284, 344, 355, 430, 568, 688, 710, 860, 1136, 1376, 1420, 1720, 2272, 2840, 3053, 3440, 5680, 6106, 6880, 11360, 12212, 15265, 24424, 30530, 41381, 48848, 61060, 82762, 97696, 122120, 165524, 206905, 244240, 331048, 413810, 488480, 662096, 827620, 1324192, 1655240, 1779383, 2938051, 3310480, 3558766, 5876102, 6620960, 7117532, 8896915, 11752204, 14235064, 14690255, 17793830, 23504408, 28470128, 29380510, 35587660, 47008816, 56940256, 58761020, 71175320, 94017632, 117522040, 126336193, 142350640, 235044080, 252672386, 284701280, 470088160, 505344772, 631680965, 1010689544, 1263361930, 2021379088, 2526723860, 4042758176, 5053447720, 10106895440, 20213790880]

約数ペア:

[(1, 20213790880), (2, 10106895440), (4, 5053447720), (5, 4042758176), (8, 2526723860), (10, 2021379088), (16, 1263361930), (20, 1010689544), (32, 631680965), (40, 505344772), (43, 470088160), (71, 284701280), (80, 252672386), (86, 235044080), (142, 142350640), (160, 126336193), (172, 117522040), (215, 94017632), (284, 71175320), (344, 58761020), (355, 56940256), (430, 47008816), (568, 35587660), (688, 29380510), (710, 28470128), (860, 23504408), (1136, 17793830), (1376, 14690255), (1420, 14235064), (1720, 11752204), (2272, 8896915), (2840, 7117532), (3053, 6620960), (3440, 5876102), (5680, 3558766), (6106, 3310480), (6880, 2938051), (11360, 1779383), (12212, 1655240), (15265, 1324192), (24424, 827620), (30530, 662096), (41381, 488480), (48848, 413810), (61060, 331048), (82762, 244240), (97696, 206905), (122120, 165524)]