21105910

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{281}}^1$

素因数の和:361

約数の個数: 64

約数和(自身を含む): 46293120

約数和(自身を除く): 25187210

約数列:

[1, 2, 5, 7, 10, 14, 29, 35, 37, 58, 70, 74, 145, 185, 203, 259, 281, 290, 370, 406, 518, 562, 1015, 1073, 1295, 1405, 1967, 2030, 2146, 2590, 2810, 3934, 5365, 7511, 8149, 9835, 10397, 10730, 15022, 16298, 19670, 20794, 37555, 40745, 51985, 57043, 72779, 75110, 81490, 103970, 114086, 145558, 285215, 301513, 363895, 570430, 603026, 727790, 1507565, 2110591, 3015130, 4221182, 10552955, 21105910]

約数ペア:

[(1, 21105910), (2, 10552955), (5, 4221182), (7, 3015130), (10, 2110591), (14, 1507565), (29, 727790), (35, 603026), (37, 570430), (58, 363895), (70, 301513), (74, 285215), (145, 145558), (185, 114086), (203, 103970), (259, 81490), (281, 75110), (290, 72779), (370, 57043), (406, 51985), (518, 40745), (562, 37555), (1015, 20794), (1073, 19670), (1295, 16298), (1405, 15022), (1967, 10730), (2030, 10397), (2146, 9835), (2590, 8149), (2810, 7511), (3934, 5365)]