21020402

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1\times {\mathrm{193}}^1$

素因数の和:338

約数の個数: 32

約数和(自身を含む): 35199360

約数和(自身を除く): 14178958

約数列:

[1, 2, 13, 26, 59, 71, 118, 142, 193, 386, 767, 923, 1534, 1846, 2509, 4189, 5018, 8378, 11387, 13703, 22774, 27406, 54457, 108914, 148031, 178139, 296062, 356278, 808477, 1616954, 10510201, 21020402]

約数ペア:

[(1, 21020402), (2, 10510201), (13, 1616954), (26, 808477), (59, 356278), (71, 296062), (118, 178139), (142, 148031), (193, 108914), (386, 54457), (767, 27406), (923, 22774), (1534, 13703), (1846, 11387), (2509, 8378), (4189, 5018)]