19912140

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{110623}}^1$

素因数の和:110638

約数の個数: 36

約数和(自身を含む): 60400704

約数和(自身を除く): 40488564

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 110623, 221246, 331869, 442492, 553115, 663738, 995607, 1106230, 1327476, 1659345, 1991214, 2212460, 3318690, 3982428, 4978035, 6637380, 9956070, 19912140]

約数ペア:

[(1, 19912140), (2, 9956070), (3, 6637380), (4, 4978035), (5, 3982428), (6, 3318690), (9, 2212460), (10, 1991214), (12, 1659345), (15, 1327476), (18, 1106230), (20, 995607), (30, 663738), (36, 553115), (45, 442492), (60, 331869), (90, 221246), (180, 110623)]