21993784

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{2741}}^1$

素因数の和:2823

約数の個数: 32

約数和(自身を含む): 44420400

約数和(自身を除く): 22426616

約数列:

[1, 2, 4, 8, 17, 34, 59, 68, 118, 136, 236, 472, 1003, 2006, 2741, 4012, 5482, 8024, 10964, 21928, 46597, 93194, 161719, 186388, 323438, 372776, 646876, 1293752, 2749223, 5498446, 10996892, 21993784]

約数ペア:

[(1, 21993784), (2, 10996892), (4, 5498446), (8, 2749223), (17, 1293752), (34, 646876), (59, 372776), (68, 323438), (118, 186388), (136, 161719), (236, 93194), (472, 46597), (1003, 21928), (2006, 10964), (2741, 8024), (4012, 5482)]