20028840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{347}}^1$

素因数の和:411

約数の個数: 128

約数和(自身を含む): 66648960

約数和(自身を除く): 46620120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 37, 39, 40, 52, 60, 65, 74, 78, 104, 111, 120, 130, 148, 156, 185, 195, 222, 260, 296, 312, 347, 370, 390, 444, 481, 520, 555, 694, 740, 780, 888, 962, 1041, 1110, 1388, 1443, 1480, 1560, 1735, 1924, 2082, 2220, 2405, 2776, 2886, 3470, 3848, 4164, 4440, 4511, 4810, 5205, 5772, 6940, 7215, 8328, 9022, 9620, 10410, 11544, 12839, 13533, 13880, 14430, 18044, 19240, 20820, 22555, 25678, 27066, 28860, 36088, 38517, 41640, 45110, 51356, 54132, 57720, 64195, 67665, 77034, 90220, 102712, 108264, 128390, 135330, 154068, 166907, 180440, 192585, 256780, 270660, 308136, 333814, 385170, 500721, 513560, 541320, 667628, 770340, 834535, 1001442, 1335256, 1540680, 1669070, 2002884, 2503605, 3338140, 4005768, 5007210, 6676280, 10014420, 20028840]

約数ペア:

[(1, 20028840), (2, 10014420), (3, 6676280), (4, 5007210), (5, 4005768), (6, 3338140), (8, 2503605), (10, 2002884), (12, 1669070), (13, 1540680), (15, 1335256), (20, 1001442), (24, 834535), (26, 770340), (30, 667628), (37, 541320), (39, 513560), (40, 500721), (52, 385170), (60, 333814), (65, 308136), (74, 270660), (78, 256780), (104, 192585), (111, 180440), (120, 166907), (130, 154068), (148, 135330), (156, 128390), (185, 108264), (195, 102712), (222, 90220), (260, 77034), (296, 67665), (312, 64195), (347, 57720), (370, 54132), (390, 51356), (444, 45110), (481, 41640), (520, 38517), (555, 36088), (694, 28860), (740, 27066), (780, 25678), (888, 22555), (962, 20820), (1041, 19240), (1110, 18044), (1388, 14430), (1443, 13880), (1480, 13533), (1560, 12839), (1735, 11544), (1924, 10410), (2082, 9620), (2220, 9022), (2405, 8328), (2776, 7215), (2886, 6940), (3470, 5772), (3848, 5205), (4164, 4810), (4440, 4511)]