21426704

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{3323}}^1$

素因数の和:3375

約数の個数: 40

約数和(自身を含む): 46163712

約数和(自身を除く): 24737008

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 52, 62, 104, 124, 208, 248, 403, 496, 806, 1612, 3224, 3323, 6448, 6646, 13292, 26584, 43199, 53168, 86398, 103013, 172796, 206026, 345592, 412052, 691184, 824104, 1339169, 1648208, 2678338, 5356676, 10713352, 21426704]

約数ペア:

[(1, 21426704), (2, 10713352), (4, 5356676), (8, 2678338), (13, 1648208), (16, 1339169), (26, 824104), (31, 691184), (52, 412052), (62, 345592), (104, 206026), (124, 172796), (208, 103013), (248, 86398), (403, 53168), (496, 43199), (806, 26584), (1612, 13292), (3224, 6646), (3323, 6448)]