28825262500

素因数分解:

$2^2\times 5^5\times {\mathrm{1289}}^1\times {\mathrm{1789}}^1$

素因数の和:3107

約数の個数: 72

約数和(自身を含む): 63135412200

約数和(自身を除く): 34310149700

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 625, 1250, 1289, 1789, 2500, 2578, 3125, 3578, 5156, 6250, 6445, 7156, 8945, 12500, 12890, 17890, 25780, 32225, 35780, 44725, 64450, 89450, 128900, 161125, 178900, 223625, 322250, 447250, 644500, 805625, 894500, 1118125, 1611250, 2236250, 2306021, 3222500, 4028125, 4472500, 4612042, 5590625, 8056250, 9224084, 11181250, 11530105, 16112500, 22362500, 23060210, 46120420, 57650525, 115301050, 230602100, 288252625, 576505250, 1153010500, 1441263125, 2882526250, 5765052500, 7206315625, 14412631250, 28825262500]

約数ペア:

[(1, 28825262500), (2, 14412631250), (4, 7206315625), (5, 5765052500), (10, 2882526250), (20, 1441263125), (25, 1153010500), (50, 576505250), (100, 288252625), (125, 230602100), (250, 115301050), (500, 57650525), (625, 46120420), (1250, 23060210), (1289, 22362500), (1789, 16112500), (2500, 11530105), (2578, 11181250), (3125, 9224084), (3578, 8056250), (5156, 5590625), (6250, 4612042), (6445, 4472500), (7156, 4028125), (8945, 3222500), (12500, 2306021), (12890, 2236250), (17890, 1611250), (25780, 1118125), (32225, 894500), (35780, 805625), (44725, 644500), (64450, 447250), (89450, 322250), (128900, 223625), (161125, 178900)]