28085800

素因数分解:

$2^3\times 5^2\times {\mathrm{19}}^2\times {\mathrm{389}}^1$

素因数の和:443

約数の個数: 72

約数和(自身を含む): 69094350

約数和(自身を除く): 41008550

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 25, 38, 40, 50, 76, 95, 100, 152, 190, 200, 361, 380, 389, 475, 722, 760, 778, 950, 1444, 1556, 1805, 1900, 1945, 2888, 3112, 3610, 3800, 3890, 7220, 7391, 7780, 9025, 9725, 14440, 14782, 15560, 18050, 19450, 29564, 36100, 36955, 38900, 59128, 72200, 73910, 77800, 140429, 147820, 184775, 280858, 295640, 369550, 561716, 702145, 739100, 1123432, 1404290, 1478200, 2808580, 3510725, 5617160, 7021450, 14042900, 28085800]

約数ペア:

[(1, 28085800), (2, 14042900), (4, 7021450), (5, 5617160), (8, 3510725), (10, 2808580), (19, 1478200), (20, 1404290), (25, 1123432), (38, 739100), (40, 702145), (50, 561716), (76, 369550), (95, 295640), (100, 280858), (152, 184775), (190, 147820), (200, 140429), (361, 77800), (380, 73910), (389, 72200), (475, 59128), (722, 38900), (760, 36955), (778, 36100), (950, 29564), (1444, 19450), (1556, 18050), (1805, 15560), (1900, 14782), (1945, 14440), (2888, 9725), (3112, 9025), (3610, 7780), (3800, 7391), (3890, 7220)]