28666021960

素因数分解:

$2^3\times 5^1\times {\mathrm{3391}}^1\times {\mathrm{211339}}^1$

素因数の和:214741

約数の個数: 32

約数和(自身を含む): 64517875200

約数和(自身を除く): 35851853240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3391, 6782, 13564, 16955, 27128, 33910, 67820, 135640, 211339, 422678, 845356, 1056695, 1690712, 2113390, 4226780, 8453560, 716650549, 1433301098, 2866602196, 3583252745, 5733204392, 7166505490, 14333010980, 28666021960]

約数ペア:

[(1, 28666021960), (2, 14333010980), (4, 7166505490), (5, 5733204392), (8, 3583252745), (10, 2866602196), (20, 1433301098), (40, 716650549), (3391, 8453560), (6782, 4226780), (13564, 2113390), (16955, 1690712), (27128, 1056695), (33910, 845356), (67820, 422678), (135640, 211339)]