20165720320

素因数分解:

$2^8\times 5^1\times {\mathrm{43}}^1\times {\mathrm{366383}}^1$

素因数の和:366447

約数の個数: 72

約数和(自身を含む): 49426667136

約数和(自身を除く): 29260946816

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 64, 80, 86, 128, 160, 172, 215, 256, 320, 344, 430, 640, 688, 860, 1280, 1376, 1720, 2752, 3440, 5504, 6880, 11008, 13760, 27520, 55040, 366383, 732766, 1465532, 1831915, 2931064, 3663830, 5862128, 7327660, 11724256, 14655320, 15754469, 23448512, 29310640, 31508938, 46897024, 58621280, 63017876, 78772345, 93794048, 117242560, 126035752, 157544690, 234485120, 252071504, 315089380, 468970240, 504143008, 630178760, 1008286016, 1260357520, 2016572032, 2520715040, 4033144064, 5041430080, 10082860160, 20165720320]

約数ペア:

[(1, 20165720320), (2, 10082860160), (4, 5041430080), (5, 4033144064), (8, 2520715040), (10, 2016572032), (16, 1260357520), (20, 1008286016), (32, 630178760), (40, 504143008), (43, 468970240), (64, 315089380), (80, 252071504), (86, 234485120), (128, 157544690), (160, 126035752), (172, 117242560), (215, 93794048), (256, 78772345), (320, 63017876), (344, 58621280), (430, 46897024), (640, 31508938), (688, 29310640), (860, 23448512), (1280, 15754469), (1376, 14655320), (1720, 11724256), (2752, 7327660), (3440, 5862128), (5504, 3663830), (6880, 2931064), (11008, 1831915), (13760, 1465532), (27520, 732766), (55040, 366383)]