21751184

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{14939}}^1$

素因数の和:14967

約数の個数: 40

約数和(自身を含む): 51871680

約数和(自身を除く): 30120496

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456, 14939, 29878, 59756, 104573, 119512, 194207, 209146, 239024, 388414, 418292, 776828, 836584, 1359449, 1553656, 1673168, 2718898, 3107312, 5437796, 10875592, 21751184]

約数ペア:

[(1, 21751184), (2, 10875592), (4, 5437796), (7, 3107312), (8, 2718898), (13, 1673168), (14, 1553656), (16, 1359449), (26, 836584), (28, 776828), (52, 418292), (56, 388414), (91, 239024), (104, 209146), (112, 194207), (182, 119512), (208, 104573), (364, 59756), (728, 29878), (1456, 14939)]