21247920

素因数分解:

$2^4\times 3^5\times 5^1\times {\mathrm{1093}}^1$

素因数の和:1121

約数の個数: 120

約数和(自身を含む): 74068176

約数和(自身を除く): 52820256

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 72, 80, 81, 90, 108, 120, 135, 144, 162, 180, 216, 240, 243, 270, 324, 360, 405, 432, 486, 540, 648, 720, 810, 972, 1080, 1093, 1215, 1296, 1620, 1944, 2160, 2186, 2430, 3240, 3279, 3888, 4372, 4860, 5465, 6480, 6558, 8744, 9720, 9837, 10930, 13116, 16395, 17488, 19440, 19674, 21860, 26232, 29511, 32790, 39348, 43720, 49185, 52464, 59022, 65580, 78696, 87440, 88533, 98370, 118044, 131160, 147555, 157392, 177066, 196740, 236088, 262320, 265599, 295110, 354132, 393480, 442665, 472176, 531198, 590220, 708264, 786960, 885330, 1062396, 1180440, 1327995, 1416528, 1770660, 2124792, 2360880, 2655990, 3541320, 4249584, 5311980, 7082640, 10623960, 21247920]

約数ペア:

[(1, 21247920), (2, 10623960), (3, 7082640), (4, 5311980), (5, 4249584), (6, 3541320), (8, 2655990), (9, 2360880), (10, 2124792), (12, 1770660), (15, 1416528), (16, 1327995), (18, 1180440), (20, 1062396), (24, 885330), (27, 786960), (30, 708264), (36, 590220), (40, 531198), (45, 472176), (48, 442665), (54, 393480), (60, 354132), (72, 295110), (80, 265599), (81, 262320), (90, 236088), (108, 196740), (120, 177066), (135, 157392), (144, 147555), (162, 131160), (180, 118044), (216, 98370), (240, 88533), (243, 87440), (270, 78696), (324, 65580), (360, 59022), (405, 52464), (432, 49185), (486, 43720), (540, 39348), (648, 32790), (720, 29511), (810, 26232), (972, 21860), (1080, 19674), (1093, 19440), (1215, 17488), (1296, 16395), (1620, 13116), (1944, 10930), (2160, 9837), (2186, 9720), (2430, 8744), (3240, 6558), (3279, 6480), (3888, 5465), (4372, 4860)]