20499200

素因数分解:

$2^8\times 5^2\times {\mathrm{3203}}^1$

素因数の和:3229

約数の個数: 54

約数和(自身を含む): 50754564

約数和(自身を除く): 30255364

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 640, 800, 1280, 1600, 3200, 3203, 6400, 6406, 12812, 16015, 25624, 32030, 51248, 64060, 80075, 102496, 128120, 160150, 204992, 256240, 320300, 409984, 512480, 640600, 819968, 1024960, 1281200, 2049920, 2562400, 4099840, 5124800, 10249600, 20499200]

約数ペア:

[(1, 20499200), (2, 10249600), (4, 5124800), (5, 4099840), (8, 2562400), (10, 2049920), (16, 1281200), (20, 1024960), (25, 819968), (32, 640600), (40, 512480), (50, 409984), (64, 320300), (80, 256240), (100, 204992), (128, 160150), (160, 128120), (200, 102496), (256, 80075), (320, 64060), (400, 51248), (640, 32030), (800, 25624), (1280, 16015), (1600, 12812), (3200, 6406), (3203, 6400)]