21919828

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{337}}^1$

素因数の和:472

約数の個数: 48

約数和(自身を含む): 46335744

約数和(自身を除く): 24415916

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 92, 101, 161, 202, 322, 337, 404, 644, 674, 707, 1348, 1414, 2323, 2359, 2828, 4646, 4718, 7751, 9292, 9436, 15502, 16261, 31004, 32522, 34037, 54257, 65044, 68074, 108514, 136148, 217028, 238259, 476518, 782851, 953036, 1565702, 3131404, 5479957, 10959914, 21919828]

約数ペア:

[(1, 21919828), (2, 10959914), (4, 5479957), (7, 3131404), (14, 1565702), (23, 953036), (28, 782851), (46, 476518), (92, 238259), (101, 217028), (161, 136148), (202, 108514), (322, 68074), (337, 65044), (404, 54257), (644, 34037), (674, 32522), (707, 31004), (1348, 16261), (1414, 15502), (2323, 9436), (2359, 9292), (2828, 7751), (4646, 4718)]