20121044

素因数分解:

$2^2\times {\mathrm{23}}^2\times {\mathrm{37}}^1\times {\mathrm{257}}^1$

素因数の和:344

約数の個数: 36

約数和(自身を含む): 37951284

約数和(自身を除く): 17830240

約数列:

[1, 2, 4, 23, 37, 46, 74, 92, 148, 257, 514, 529, 851, 1028, 1058, 1702, 2116, 3404, 5911, 9509, 11822, 19018, 19573, 23644, 38036, 39146, 78292, 135953, 218707, 271906, 437414, 543812, 874828, 5030261, 10060522, 20121044]

約数ペア:

[(1, 20121044), (2, 10060522), (4, 5030261), (23, 874828), (37, 543812), (46, 437414), (74, 271906), (92, 218707), (148, 135953), (257, 78292), (514, 39146), (529, 38036), (851, 23644), (1028, 19573), (1058, 19018), (1702, 11822), (2116, 9509), (3404, 5911)]