21659972

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{41}}^1\times {\mathrm{457}}^1$

素因数の和:536

約数の個数: 36

約数和(自身を含む): 41338164

約数和(自身を除く): 19678192

約数列:

[1, 2, 4, 17, 34, 41, 68, 82, 164, 289, 457, 578, 697, 914, 1156, 1394, 1828, 2788, 7769, 11849, 15538, 18737, 23698, 31076, 37474, 47396, 74948, 132073, 264146, 318529, 528292, 637058, 1274116, 5414993, 10829986, 21659972]

約数ペア:

[(1, 21659972), (2, 10829986), (4, 5414993), (17, 1274116), (34, 637058), (41, 528292), (68, 318529), (82, 264146), (164, 132073), (289, 74948), (457, 47396), (578, 37474), (697, 31076), (914, 23698), (1156, 18737), (1394, 15538), (1828, 11849), (2788, 7769)]