19618060

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{12739}}^1$

素因数の和:12766

約数の個数: 48

約数和(自身を含む): 51367680

約数和(自身を除く): 31749620

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 12739, 25478, 50956, 63695, 89173, 127390, 140129, 178346, 254780, 280258, 356692, 445865, 560516, 700645, 891730, 980903, 1401290, 1783460, 1961806, 2802580, 3923612, 4904515, 9809030, 19618060]

約数ペア:

[(1, 19618060), (2, 9809030), (4, 4904515), (5, 3923612), (7, 2802580), (10, 1961806), (11, 1783460), (14, 1401290), (20, 980903), (22, 891730), (28, 700645), (35, 560516), (44, 445865), (55, 356692), (70, 280258), (77, 254780), (110, 178346), (140, 140129), (154, 127390), (220, 89173), (308, 63695), (385, 50956), (770, 25478), (1540, 12739)]