21690540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{120503}}^1$

素因数の和:120518

約数の個数: 36

約数和(自身を含む): 65795184

約数和(自身を除く): 44104644

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 120503, 241006, 361509, 482012, 602515, 723018, 1084527, 1205030, 1446036, 1807545, 2169054, 2410060, 3615090, 4338108, 5422635, 7230180, 10845270, 21690540]

約数ペア:

[(1, 21690540), (2, 10845270), (3, 7230180), (4, 5422635), (5, 4338108), (6, 3615090), (9, 2410060), (10, 2169054), (12, 1807545), (15, 1446036), (18, 1205030), (20, 1084527), (30, 723018), (36, 602515), (45, 482012), (60, 361509), (90, 241006), (180, 120503)]