21287970

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{21503}}^1$

素因数の和:21527

約数の個数: 48

約数和(自身を含む): 60383232

約数和(自身を除く): 39095262

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 90, 99, 110, 165, 198, 330, 495, 990, 21503, 43006, 64509, 107515, 129018, 193527, 215030, 236533, 322545, 387054, 473066, 645090, 709599, 967635, 1182665, 1419198, 1935270, 2128797, 2365330, 3547995, 4257594, 7095990, 10643985, 21287970]

約数ペア:

[(1, 21287970), (2, 10643985), (3, 7095990), (5, 4257594), (6, 3547995), (9, 2365330), (10, 2128797), (11, 1935270), (15, 1419198), (18, 1182665), (22, 967635), (30, 709599), (33, 645090), (45, 473066), (55, 387054), (66, 322545), (90, 236533), (99, 215030), (110, 193527), (165, 129018), (198, 107515), (330, 64509), (495, 43006), (990, 21503)]