21000638956

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{227}}^1\times {\mathrm{72503}}^1$

素因数の和:72774

約数の個数: 48

約数和(自身を含む): 41657898240

約数和(自身を除く): 20657259284

約数列:

[1, 2, 4, 11, 22, 29, 44, 58, 116, 227, 319, 454, 638, 908, 1276, 2497, 4994, 6583, 9988, 13166, 26332, 72413, 72503, 144826, 145006, 289652, 290012, 797533, 1595066, 2102587, 3190132, 4205174, 8410348, 16458181, 23128457, 32916362, 46256914, 65832724, 92513828, 181039991, 362079982, 477287249, 724159964, 954574498, 1909148996, 5250159739, 10500319478, 21000638956]

約数ペア:

[(1, 21000638956), (2, 10500319478), (4, 5250159739), (11, 1909148996), (22, 954574498), (29, 724159964), (44, 477287249), (58, 362079982), (116, 181039991), (227, 92513828), (319, 65832724), (454, 46256914), (638, 32916362), (908, 23128457), (1276, 16458181), (2497, 8410348), (4994, 4205174), (6583, 3190132), (9988, 2102587), (13166, 1595066), (26332, 797533), (72413, 290012), (72503, 289652), (144826, 145006)]