21475792

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{463}}^1$

素因数の和:707

約数の個数: 40

約数和(自身を含む): 45108224

約数和(自身を除く): 23632432

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 223, 446, 463, 892, 926, 1784, 1852, 2899, 3568, 3704, 5798, 6019, 7408, 11596, 12038, 23192, 24076, 46384, 48152, 96304, 103249, 206498, 412996, 825992, 1342237, 1651984, 2684474, 5368948, 10737896, 21475792]

約数ペア:

[(1, 21475792), (2, 10737896), (4, 5368948), (8, 2684474), (13, 1651984), (16, 1342237), (26, 825992), (52, 412996), (104, 206498), (208, 103249), (223, 96304), (446, 48152), (463, 46384), (892, 24076), (926, 23192), (1784, 12038), (1852, 11596), (2899, 7408), (3568, 6019), (3704, 5798)]