20081248

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{641}}^1$

素因数の和:751

約数の個数: 48

約数和(自身を含む): 43681680

約数和(自身を除く): 23600432

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 88, 89, 176, 178, 352, 356, 641, 712, 979, 1282, 1424, 1958, 2564, 2848, 3916, 5128, 7051, 7832, 10256, 14102, 15664, 20512, 28204, 31328, 56408, 57049, 112816, 114098, 225632, 228196, 456392, 627539, 912784, 1255078, 1825568, 2510156, 5020312, 10040624, 20081248]

約数ペア:

[(1, 20081248), (2, 10040624), (4, 5020312), (8, 2510156), (11, 1825568), (16, 1255078), (22, 912784), (32, 627539), (44, 456392), (88, 228196), (89, 225632), (176, 114098), (178, 112816), (352, 57049), (356, 56408), (641, 31328), (712, 28204), (979, 20512), (1282, 15664), (1424, 14102), (1958, 10256), (2564, 7832), (2848, 7051), (3916, 5128)]