21576940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{14011}}^1$

素因数の和:14038

約数の個数: 48

約数和(自身を含む): 56496384

約数和(自身を除く): 34919444

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 14011, 28022, 56044, 70055, 98077, 140110, 154121, 196154, 280220, 308242, 392308, 490385, 616484, 770605, 980770, 1078847, 1541210, 1961540, 2157694, 3082420, 4315388, 5394235, 10788470, 21576940]

約数ペア:

[(1, 21576940), (2, 10788470), (4, 5394235), (5, 4315388), (7, 3082420), (10, 2157694), (11, 1961540), (14, 1541210), (20, 1078847), (22, 980770), (28, 770605), (35, 616484), (44, 490385), (55, 392308), (70, 308242), (77, 280220), (110, 196154), (140, 154121), (154, 140110), (220, 98077), (308, 70055), (385, 56044), (770, 28022), (1540, 14011)]