20624000

素因数分解:

$2^7\times 5^3\times {\mathrm{1289}}^1$

素因数の和:1318

約数の個数: 64

約数和(自身を含む): 51316200

約数和(自身を除く): 30692200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 320, 400, 500, 640, 800, 1000, 1289, 1600, 2000, 2578, 3200, 4000, 5156, 6445, 8000, 10312, 12890, 16000, 20624, 25780, 32225, 41248, 51560, 64450, 82496, 103120, 128900, 161125, 164992, 206240, 257800, 322250, 412480, 515600, 644500, 824960, 1031200, 1289000, 2062400, 2578000, 4124800, 5156000, 10312000, 20624000]

約数ペア:

[(1, 20624000), (2, 10312000), (4, 5156000), (5, 4124800), (8, 2578000), (10, 2062400), (16, 1289000), (20, 1031200), (25, 824960), (32, 644500), (40, 515600), (50, 412480), (64, 322250), (80, 257800), (100, 206240), (125, 164992), (128, 161125), (160, 128900), (200, 103120), (250, 82496), (320, 64450), (400, 51560), (500, 41248), (640, 32225), (800, 25780), (1000, 20624), (1289, 16000), (1600, 12890), (2000, 10312), (2578, 8000), (3200, 6445), (4000, 5156)]