3280000

素因数分解:

$2^7\times 5^4\times {\mathrm{41}}^1$

素因数の和:75

約数の個数: 80

約数和(自身を含む): 8364510

約数和(自身を除く): 5084510

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 41, 50, 64, 80, 82, 100, 125, 128, 160, 164, 200, 205, 250, 320, 328, 400, 410, 500, 625, 640, 656, 800, 820, 1000, 1025, 1250, 1312, 1600, 1640, 2000, 2050, 2500, 2624, 3200, 3280, 4000, 4100, 5000, 5125, 5248, 6560, 8000, 8200, 10000, 10250, 13120, 16000, 16400, 20000, 20500, 25625, 26240, 32800, 40000, 41000, 51250, 65600, 80000, 82000, 102500, 131200, 164000, 205000, 328000, 410000, 656000, 820000, 1640000, 3280000]

約数ペア:

[(1, 3280000), (2, 1640000), (4, 820000), (5, 656000), (8, 410000), (10, 328000), (16, 205000), (20, 164000), (25, 131200), (32, 102500), (40, 82000), (41, 80000), (50, 65600), (64, 51250), (80, 41000), (82, 40000), (100, 32800), (125, 26240), (128, 25625), (160, 20500), (164, 20000), (200, 16400), (205, 16000), (250, 13120), (320, 10250), (328, 10000), (400, 8200), (410, 8000), (500, 6560), (625, 5248), (640, 5125), (656, 5000), (800, 4100), (820, 4000), (1000, 3280), (1025, 3200), (1250, 2624), (1312, 2500), (1600, 2050), (1640, 2000)]