21236220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{117979}}^1$

素因数の和:117994

約数の個数: 36

約数和(自身を含む): 64417080

約数和(自身を除く): 43180860

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 117979, 235958, 353937, 471916, 589895, 707874, 1061811, 1179790, 1415748, 1769685, 2123622, 2359580, 3539370, 4247244, 5309055, 7078740, 10618110, 21236220]

約数ペア:

[(1, 21236220), (2, 10618110), (3, 7078740), (4, 5309055), (5, 4247244), (6, 3539370), (9, 2359580), (10, 2123622), (12, 1769685), (15, 1415748), (18, 1179790), (20, 1061811), (30, 707874), (36, 589895), (45, 471916), (60, 353937), (90, 235958), (180, 117979)]