21149555

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{311}}^1$

素因数の和:419

約数の個数: 32

約数和(自身を含む): 30551040

約数和(自身を除く): 9401485

約数列:

[1, 5, 7, 29, 35, 67, 145, 203, 311, 335, 469, 1015, 1555, 1943, 2177, 2345, 9019, 9715, 10885, 13601, 20837, 45095, 63133, 68005, 104185, 145859, 315665, 604273, 729295, 3021365, 4229911, 21149555]

約数ペア:

[(1, 21149555), (5, 4229911), (7, 3021365), (29, 729295), (35, 604273), (67, 315665), (145, 145859), (203, 104185), (311, 68005), (335, 63133), (469, 45095), (1015, 20837), (1555, 13601), (1943, 10885), (2177, 9715), (2345, 9019)]