21109390

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{877}}^1$

素因数の和:996

約数の個数: 32

約数和(自身を含む): 39826080

約数和(自身を除く): 18716690

約数列:

[1, 2, 5, 10, 29, 58, 83, 145, 166, 290, 415, 830, 877, 1754, 2407, 4385, 4814, 8770, 12035, 24070, 25433, 50866, 72791, 127165, 145582, 254330, 363955, 727910, 2110939, 4221878, 10554695, 21109390]

約数ペア:

[(1, 21109390), (2, 10554695), (5, 4221878), (10, 2110939), (29, 727910), (58, 363955), (83, 254330), (145, 145582), (166, 127165), (290, 72791), (415, 50866), (830, 25433), (877, 24070), (1754, 12035), (2407, 8770), (4385, 4814)]