25233280

素因数分解:

$2^7\times 5^1\times {\mathrm{89}}^1\times {\mathrm{443}}^1$

素因数の和:551

約数の個数: 64

約数和(自身を含む): 61138800

約数和(自身を除く): 35905520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 89, 128, 160, 178, 320, 356, 443, 445, 640, 712, 886, 890, 1424, 1772, 1780, 2215, 2848, 3544, 3560, 4430, 5696, 7088, 7120, 8860, 11392, 14176, 14240, 17720, 28352, 28480, 35440, 39427, 56704, 56960, 70880, 78854, 141760, 157708, 197135, 283520, 315416, 394270, 630832, 788540, 1261664, 1577080, 2523328, 3154160, 5046656, 6308320, 12616640, 25233280]

約数ペア:

[(1, 25233280), (2, 12616640), (4, 6308320), (5, 5046656), (8, 3154160), (10, 2523328), (16, 1577080), (20, 1261664), (32, 788540), (40, 630832), (64, 394270), (80, 315416), (89, 283520), (128, 197135), (160, 157708), (178, 141760), (320, 78854), (356, 70880), (443, 56960), (445, 56704), (640, 39427), (712, 35440), (886, 28480), (890, 28352), (1424, 17720), (1772, 14240), (1780, 14176), (2215, 11392), (2848, 8860), (3544, 7120), (3560, 7088), (4430, 5696)]