19409940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{9803}}^1$

素因数の和:9829

約数の個数: 72

約数和(自身を含む): 64235808

約数和(自身を除く): 44825868

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 9803, 19606, 29409, 39212, 49015, 58818, 88227, 98030, 107833, 117636, 147045, 176454, 196060, 215666, 294090, 323499, 352908, 431332, 441135, 539165, 588180, 646998, 882270, 970497, 1078330, 1293996, 1617495, 1764540, 1940994, 2156660, 3234990, 3881988, 4852485, 6469980, 9704970, 19409940]

約数ペア:

[(1, 19409940), (2, 9704970), (3, 6469980), (4, 4852485), (5, 3881988), (6, 3234990), (9, 2156660), (10, 1940994), (11, 1764540), (12, 1617495), (15, 1293996), (18, 1078330), (20, 970497), (22, 882270), (30, 646998), (33, 588180), (36, 539165), (44, 441135), (45, 431332), (55, 352908), (60, 323499), (66, 294090), (90, 215666), (99, 196060), (110, 176454), (132, 147045), (165, 117636), (180, 107833), (198, 98030), (220, 88227), (330, 58818), (396, 49015), (495, 39212), (660, 29409), (990, 19606), (1980, 9803)]