16400000

素因数分解:

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

素因数の和:80

約数の個数: 96

約数和(自身を含む): 41833260

約数和(自身を除く): 25433260

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, 3125, 3200, 3280, 4000, 4100, 5000, 5125, 5248, 6250, 6560, 8000, 8200, 10000, 10250, 12500, 13120, 16000, 16400, 20000, 20500, 25000, 25625, 26240, 32800, 40000, 41000, 50000, 51250, 65600, 80000, 82000, 100000, 102500, 128125, 131200, 164000, 200000, 205000, 256250, 328000, 400000, 410000, 512500, 656000, 820000, 1025000, 1640000, 2050000, 3280000, 4100000, 8200000, 16400000]

約数ペア:

[(1, 16400000), (2, 8200000), (4, 4100000), (5, 3280000), (8, 2050000), (10, 1640000), (16, 1025000), (20, 820000), (25, 656000), (32, 512500), (40, 410000), (41, 400000), (50, 328000), (64, 256250), (80, 205000), (82, 200000), (100, 164000), (125, 131200), (128, 128125), (160, 102500), (164, 100000), (200, 82000), (205, 80000), (250, 65600), (320, 51250), (328, 50000), (400, 41000), (410, 40000), (500, 32800), (625, 26240), (640, 25625), (656, 25000), (800, 20500), (820, 20000), (1000, 16400), (1025, 16000), (1250, 13120), (1312, 12500), (1600, 10250), (1640, 10000), (2000, 8200), (2050, 8000), (2500, 6560), (2624, 6250), (3125, 5248), (3200, 5125), (3280, 5000), (4000, 4100)]