21225352

素因数分解:

$2^3\times {\mathrm{101}}^1\times {\mathrm{109}}^1\times {\mathrm{241}}^1$

素因数の和:457

約数の個数: 32

約数和(自身を含む): 40728600

約数和(自身を除く): 19503248

約数列:

[1, 2, 4, 8, 101, 109, 202, 218, 241, 404, 436, 482, 808, 872, 964, 1928, 11009, 22018, 24341, 26269, 44036, 48682, 52538, 88072, 97364, 105076, 194728, 210152, 2653169, 5306338, 10612676, 21225352]

約数ペア:

[(1, 21225352), (2, 10612676), (4, 5306338), (8, 2653169), (101, 210152), (109, 194728), (202, 105076), (218, 97364), (241, 88072), (404, 52538), (436, 48682), (482, 44036), (808, 26269), (872, 24341), (964, 22018), (1928, 11009)]