21917558

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{383}}^1$

素因数の和:500

約数の個数: 32

約数和(自身を含む): 37158912

約数和(自身を除く): 15241354

約数列:

[1, 2, 13, 26, 31, 62, 71, 142, 383, 403, 766, 806, 923, 1846, 2201, 4402, 4979, 9958, 11873, 23746, 27193, 28613, 54386, 57226, 154349, 308698, 353509, 707018, 842983, 1685966, 10958779, 21917558]

約数ペア:

[(1, 21917558), (2, 10958779), (13, 1685966), (26, 842983), (31, 707018), (62, 353509), (71, 308698), (142, 154349), (383, 57226), (403, 54386), (766, 28613), (806, 27193), (923, 23746), (1846, 11873), (2201, 9958), (4402, 4979)]