1320286520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{52981}}^1$

素因数の和:53088

約数の個数: 64

約数和(自身を含む): 3433233600

約数和(自身を除く): 2112947080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 89, 140, 178, 280, 356, 445, 623, 712, 890, 1246, 1780, 2492, 3115, 3560, 4984, 6230, 12460, 24920, 52981, 105962, 211924, 264905, 370867, 423848, 529810, 741734, 1059620, 1483468, 1854335, 2119240, 2966936, 3708670, 4715309, 7417340, 9430618, 14834680, 18861236, 23576545, 33007163, 37722472, 47153090, 66014326, 94306180, 132028652, 165035815, 188612360, 264057304, 330071630, 660143260, 1320286520]

約数ペア:

[(1, 1320286520), (2, 660143260), (4, 330071630), (5, 264057304), (7, 188612360), (8, 165035815), (10, 132028652), (14, 94306180), (20, 66014326), (28, 47153090), (35, 37722472), (40, 33007163), (56, 23576545), (70, 18861236), (89, 14834680), (140, 9430618), (178, 7417340), (280, 4715309), (356, 3708670), (445, 2966936), (623, 2119240), (712, 1854335), (890, 1483468), (1246, 1059620), (1780, 741734), (2492, 529810), (3115, 423848), (3560, 370867), (4984, 264905), (6230, 211924), (12460, 105962), (24920, 52981)]