678400

素因数分解:

$2^9\times 5^2\times {\mathrm{53}}^1$

素因数の和:81

約数の個数: 60

約数和(自身を含む): 1712502

約数和(自身を除く): 1034102

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 53, 64, 80, 100, 106, 128, 160, 200, 212, 256, 265, 320, 400, 424, 512, 530, 640, 800, 848, 1060, 1280, 1325, 1600, 1696, 2120, 2560, 2650, 3200, 3392, 4240, 5300, 6400, 6784, 8480, 10600, 12800, 13568, 16960, 21200, 27136, 33920, 42400, 67840, 84800, 135680, 169600, 339200, 678400]

約数ペア:

[(1, 678400), (2, 339200), (4, 169600), (5, 135680), (8, 84800), (10, 67840), (16, 42400), (20, 33920), (25, 27136), (32, 21200), (40, 16960), (50, 13568), (53, 12800), (64, 10600), (80, 8480), (100, 6784), (106, 6400), (128, 5300), (160, 4240), (200, 3392), (212, 3200), (256, 2650), (265, 2560), (320, 2120), (400, 1696), (424, 1600), (512, 1325), (530, 1280), (640, 1060), (800, 848)]