81891030

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{209977}}^1$

素因数の和:210000

約数の個数: 32

約数和(自身を含む): 211657824

約数和(自身を除く): 129766794

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 209977, 419954, 629931, 1049885, 1259862, 2099770, 2729701, 3149655, 5459402, 6299310, 8189103, 13648505, 16378206, 27297010, 40945515, 81891030]

約数ペア:

[(1, 81891030), (2, 40945515), (3, 27297010), (5, 16378206), (6, 13648505), (10, 8189103), (13, 6299310), (15, 5459402), (26, 3149655), (30, 2729701), (39, 2099770), (65, 1259862), (78, 1049885), (130, 629931), (195, 419954), (390, 209977)]