20224000

素因数分解:

$2^{11}\times 5^3\times {\mathrm{79}}^1$

素因数の和:116

約数の個数: 96

約数和(自身を含む): 51105600

約数和(自身を除く): 30881600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 79, 80, 100, 125, 128, 158, 160, 200, 250, 256, 316, 320, 395, 400, 500, 512, 632, 640, 790, 800, 1000, 1024, 1264, 1280, 1580, 1600, 1975, 2000, 2048, 2528, 2560, 3160, 3200, 3950, 4000, 5056, 5120, 6320, 6400, 7900, 8000, 9875, 10112, 10240, 12640, 12800, 15800, 16000, 19750, 20224, 25280, 25600, 31600, 32000, 39500, 40448, 50560, 51200, 63200, 64000, 79000, 80896, 101120, 126400, 128000, 158000, 161792, 202240, 252800, 256000, 316000, 404480, 505600, 632000, 808960, 1011200, 1264000, 2022400, 2528000, 4044800, 5056000, 10112000, 20224000]

約数ペア:

[(1, 20224000), (2, 10112000), (4, 5056000), (5, 4044800), (8, 2528000), (10, 2022400), (16, 1264000), (20, 1011200), (25, 808960), (32, 632000), (40, 505600), (50, 404480), (64, 316000), (79, 256000), (80, 252800), (100, 202240), (125, 161792), (128, 158000), (158, 128000), (160, 126400), (200, 101120), (250, 80896), (256, 79000), (316, 64000), (320, 63200), (395, 51200), (400, 50560), (500, 40448), (512, 39500), (632, 32000), (640, 31600), (790, 25600), (800, 25280), (1000, 20224), (1024, 19750), (1264, 16000), (1280, 15800), (1580, 12800), (1600, 12640), (1975, 10240), (2000, 10112), (2048, 9875), (2528, 8000), (2560, 7900), (3160, 6400), (3200, 6320), (3950, 5120), (4000, 5056)]