280858000

素因数分解:

$2^4\times 5^3\times {\mathrm{19}}^2\times {\mathrm{389}}^1$

素因数の和:450

約数の個数: 120

約数和(自身を含む): 718581240

約数和(自身を除く): 437723240

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 38, 40, 50, 76, 80, 95, 100, 125, 152, 190, 200, 250, 304, 361, 380, 389, 400, 475, 500, 722, 760, 778, 950, 1000, 1444, 1520, 1556, 1805, 1900, 1945, 2000, 2375, 2888, 3112, 3610, 3800, 3890, 4750, 5776, 6224, 7220, 7391, 7600, 7780, 9025, 9500, 9725, 14440, 14782, 15560, 18050, 19000, 19450, 28880, 29564, 31120, 36100, 36955, 38000, 38900, 45125, 48625, 59128, 72200, 73910, 77800, 90250, 97250, 118256, 140429, 144400, 147820, 155600, 180500, 184775, 194500, 280858, 295640, 361000, 369550, 389000, 561716, 591280, 702145, 722000, 739100, 778000, 923875, 1123432, 1404290, 1478200, 1847750, 2246864, 2808580, 2956400, 3510725, 3695500, 5617160, 7021450, 7391000, 11234320, 14042900, 14782000, 17553625, 28085800, 35107250, 56171600, 70214500, 140429000, 280858000]

約数ペア:

[(1, 280858000), (2, 140429000), (4, 70214500), (5, 56171600), (8, 35107250), (10, 28085800), (16, 17553625), (19, 14782000), (20, 14042900), (25, 11234320), (38, 7391000), (40, 7021450), (50, 5617160), (76, 3695500), (80, 3510725), (95, 2956400), (100, 2808580), (125, 2246864), (152, 1847750), (190, 1478200), (200, 1404290), (250, 1123432), (304, 923875), (361, 778000), (380, 739100), (389, 722000), (400, 702145), (475, 591280), (500, 561716), (722, 389000), (760, 369550), (778, 361000), (950, 295640), (1000, 280858), (1444, 194500), (1520, 184775), (1556, 180500), (1805, 155600), (1900, 147820), (1945, 144400), (2000, 140429), (2375, 118256), (2888, 97250), (3112, 90250), (3610, 77800), (3800, 73910), (3890, 72200), (4750, 59128), (5776, 48625), (6224, 45125), (7220, 38900), (7391, 38000), (7600, 36955), (7780, 36100), (9025, 31120), (9500, 29564), (9725, 28880), (14440, 19450), (14782, 19000), (15560, 18050)]