21515116

素因数分解:

$2^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{3541}}^1$

素因数の和:3590

約数の個数: 36

約数和(自身を含む): 45224256

約数和(自身を除く): 23709140

約数列:

[1, 2, 4, 7, 14, 28, 31, 49, 62, 98, 124, 196, 217, 434, 868, 1519, 3038, 3541, 6076, 7082, 14164, 24787, 49574, 99148, 109771, 173509, 219542, 347018, 439084, 694036, 768397, 1536794, 3073588, 5378779, 10757558, 21515116]

約数ペア:

[(1, 21515116), (2, 10757558), (4, 5378779), (7, 3073588), (14, 1536794), (28, 768397), (31, 694036), (49, 439084), (62, 347018), (98, 219542), (124, 173509), (196, 109771), (217, 99148), (434, 49574), (868, 24787), (1519, 14164), (3038, 7082), (3541, 6076)]