21818530

素因数分解:

$2^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1\times {\mathrm{541}}^1$

素因数の和:694

約数の個数: 32

約数和(自身を含む): 40780080

約数和(自身を除く): 18961550

約数列:

[1, 2, 5, 10, 37, 74, 109, 185, 218, 370, 541, 545, 1082, 1090, 2705, 4033, 5410, 8066, 20017, 20165, 40034, 40330, 58969, 100085, 117938, 200170, 294845, 589690, 2181853, 4363706, 10909265, 21818530]

約数ペア:

[(1, 21818530), (2, 10909265), (5, 4363706), (10, 2181853), (37, 589690), (74, 294845), (109, 200170), (185, 117938), (218, 100085), (370, 58969), (541, 40330), (545, 40034), (1082, 20165), (1090, 20017), (2705, 8066), (4033, 5410)]