21900956

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{337}}^1$

素因数の和:570

約数の個数: 48

約数和(自身を含む): 48152832

約数和(自身を除く): 26251876

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 211, 308, 337, 422, 674, 844, 1348, 1477, 2321, 2359, 2954, 3707, 4642, 4718, 5908, 7414, 9284, 9436, 14828, 16247, 25949, 32494, 51898, 64988, 71107, 103796, 142214, 284428, 497749, 782177, 995498, 1564354, 1990996, 3128708, 5475239, 10950478, 21900956]

約数ペア:

[(1, 21900956), (2, 10950478), (4, 5475239), (7, 3128708), (11, 1990996), (14, 1564354), (22, 995498), (28, 782177), (44, 497749), (77, 284428), (154, 142214), (211, 103796), (308, 71107), (337, 64988), (422, 51898), (674, 32494), (844, 25949), (1348, 16247), (1477, 14828), (2321, 9436), (2359, 9284), (2954, 7414), (3707, 5908), (4642, 4718)]