20969824

素因数分解:

$2^5\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{199}}^1$

素因数の和:335

約数の個数: 48

約数和(自身を含む): 43092000

約数和(自身を除く): 22122176

約数列:

[1, 2, 4, 8, 16, 32, 37, 74, 89, 148, 178, 199, 296, 356, 398, 592, 712, 796, 1184, 1424, 1592, 2848, 3184, 3293, 6368, 6586, 7363, 13172, 14726, 17711, 26344, 29452, 35422, 52688, 58904, 70844, 105376, 117808, 141688, 235616, 283376, 566752, 655307, 1310614, 2621228, 5242456, 10484912, 20969824]

約数ペア:

[(1, 20969824), (2, 10484912), (4, 5242456), (8, 2621228), (16, 1310614), (32, 655307), (37, 566752), (74, 283376), (89, 235616), (148, 141688), (178, 117808), (199, 105376), (296, 70844), (356, 58904), (398, 52688), (592, 35422), (712, 29452), (796, 26344), (1184, 17711), (1424, 14726), (1592, 13172), (2848, 7363), (3184, 6586), (3293, 6368)]