13120000

素因数分解:

$2^9\times 5^4\times {\mathrm{41}}^1$

素因数の和:79

約数の個数: 100

約数和(自身を含む): 33556446

約数和(自身を除く): 20436446

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, 256, 320, 328, 400, 410, 500, 512, 625, 640, 656, 800, 820, 1000, 1025, 1250, 1280, 1312, 1600, 1640, 2000, 2050, 2500, 2560, 2624, 3200, 3280, 4000, 4100, 5000, 5125, 5248, 6400, 6560, 8000, 8200, 10000, 10250, 10496, 12800, 13120, 16000, 16400, 20000, 20500, 20992, 25625, 26240, 32000, 32800, 40000, 41000, 51250, 52480, 64000, 65600, 80000, 82000, 102500, 104960, 131200, 160000, 164000, 205000, 262400, 320000, 328000, 410000, 524800, 656000, 820000, 1312000, 1640000, 2624000, 3280000, 6560000, 13120000]

約数ペア:

[(1, 13120000), (2, 6560000), (4, 3280000), (5, 2624000), (8, 1640000), (10, 1312000), (16, 820000), (20, 656000), (25, 524800), (32, 410000), (40, 328000), (41, 320000), (50, 262400), (64, 205000), (80, 164000), (82, 160000), (100, 131200), (125, 104960), (128, 102500), (160, 82000), (164, 80000), (200, 65600), (205, 64000), (250, 52480), (256, 51250), (320, 41000), (328, 40000), (400, 32800), (410, 32000), (500, 26240), (512, 25625), (625, 20992), (640, 20500), (656, 20000), (800, 16400), (820, 16000), (1000, 13120), (1025, 12800), (1250, 10496), (1280, 10250), (1312, 10000), (1600, 8200), (1640, 8000), (2000, 6560), (2050, 6400), (2500, 5248), (2560, 5125), (2624, 5000), (3200, 4100), (3280, 4000)]