21725948

素因数分解:

$2^2\times {\mathrm{79}}^1\times {\mathrm{197}}^1\times {\mathrm{349}}^1$

素因数の和:629

約数の個数: 24

約数和(自身を含む): 38808000

約数和(自身を除く): 17082052

約数列:

[1, 2, 4, 79, 158, 197, 316, 349, 394, 698, 788, 1396, 15563, 27571, 31126, 55142, 62252, 68753, 110284, 137506, 275012, 5431487, 10862974, 21725948]

約数ペア:

[(1, 21725948), (2, 10862974), (4, 5431487), (79, 275012), (158, 137506), (197, 110284), (316, 68753), (349, 62252), (394, 55142), (698, 31126), (788, 27571), (1396, 15563)]