21817978

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{313}}^1\times {\mathrm{383}}^1$

素因数の和:718

約数の個数: 32

約数和(自身を含む): 40513536

約数和(自身を除く): 18695558

約数列:

[1, 2, 7, 13, 14, 26, 91, 182, 313, 383, 626, 766, 2191, 2681, 4069, 4382, 4979, 5362, 8138, 9958, 28483, 34853, 56966, 69706, 119879, 239758, 839153, 1558427, 1678306, 3116854, 10908989, 21817978]

約数ペア:

[(1, 21817978), (2, 10908989), (7, 3116854), (13, 1678306), (14, 1558427), (26, 839153), (91, 239758), (182, 119879), (313, 69706), (383, 56966), (626, 34853), (766, 28483), (2191, 9958), (2681, 8138), (4069, 5362), (4382, 4979)]