289029020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1039}}^1\times {\mathrm{1987}}^1$

素因数の和:3042

約数の個数: 48

約数和(自身を含む): 694686720

約数和(自身を除く): 405657700

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1039, 1987, 2078, 3974, 4156, 5195, 7273, 7948, 9935, 10390, 13909, 14546, 19870, 20780, 27818, 29092, 36365, 39740, 55636, 69545, 72730, 139090, 145460, 278180, 2064493, 4128986, 8257972, 10322465, 14451451, 20644930, 28902902, 41289860, 57805804, 72257255, 144514510, 289029020]

約数ペア:

[(1, 289029020), (2, 144514510), (4, 72257255), (5, 57805804), (7, 41289860), (10, 28902902), (14, 20644930), (20, 14451451), (28, 10322465), (35, 8257972), (70, 4128986), (140, 2064493), (1039, 278180), (1987, 145460), (2078, 139090), (3974, 72730), (4156, 69545), (5195, 55636), (7273, 39740), (7948, 36365), (9935, 29092), (10390, 27818), (13909, 20780), (14546, 19870)]