20992000

素因数分解:

$2^{12}\times 5^3\times {\mathrm{41}}^1$

素因数の和:80

約数の個数: 104

約数和(自身を含む): 53667432

約数和(自身を除く): 32675432

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, 640, 656, 800, 820, 1000, 1024, 1025, 1280, 1312, 1600, 1640, 2000, 2048, 2050, 2560, 2624, 3200, 3280, 4000, 4096, 4100, 5120, 5125, 5248, 6400, 6560, 8000, 8200, 10240, 10250, 10496, 12800, 13120, 16000, 16400, 20480, 20500, 20992, 25600, 26240, 32000, 32800, 41000, 41984, 51200, 52480, 64000, 65600, 82000, 83968, 102400, 104960, 128000, 131200, 164000, 167936, 209920, 256000, 262400, 328000, 419840, 512000, 524800, 656000, 839680, 1049600, 1312000, 2099200, 2624000, 4198400, 5248000, 10496000, 20992000]

約数ペア:

[(1, 20992000), (2, 10496000), (4, 5248000), (5, 4198400), (8, 2624000), (10, 2099200), (16, 1312000), (20, 1049600), (25, 839680), (32, 656000), (40, 524800), (41, 512000), (50, 419840), (64, 328000), (80, 262400), (82, 256000), (100, 209920), (125, 167936), (128, 164000), (160, 131200), (164, 128000), (200, 104960), (205, 102400), (250, 83968), (256, 82000), (320, 65600), (328, 64000), (400, 52480), (410, 51200), (500, 41984), (512, 41000), (640, 32800), (656, 32000), (800, 26240), (820, 25600), (1000, 20992), (1024, 20500), (1025, 20480), (1280, 16400), (1312, 16000), (1600, 13120), (1640, 12800), (2000, 10496), (2048, 10250), (2050, 10240), (2560, 8200), (2624, 8000), (3200, 6560), (3280, 6400), (4000, 5248), (4096, 5125), (4100, 5120)]