20441600

素因数分解:

$2^9\times 5^2\times {\mathrm{1597}}^1$

素因数の和:1625

約数の個数: 60

約数和(自身を含む): 50677374

約数和(自身を除く): 30235774

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 512, 640, 800, 1280, 1597, 1600, 2560, 3194, 3200, 6388, 6400, 7985, 12776, 12800, 15970, 25552, 31940, 39925, 51104, 63880, 79850, 102208, 127760, 159700, 204416, 255520, 319400, 408832, 511040, 638800, 817664, 1022080, 1277600, 2044160, 2555200, 4088320, 5110400, 10220800, 20441600]

約数ペア:

[(1, 20441600), (2, 10220800), (4, 5110400), (5, 4088320), (8, 2555200), (10, 2044160), (16, 1277600), (20, 1022080), (25, 817664), (32, 638800), (40, 511040), (50, 408832), (64, 319400), (80, 255520), (100, 204416), (128, 159700), (160, 127760), (200, 102208), (256, 79850), (320, 63880), (400, 51104), (512, 39925), (640, 31940), (800, 25552), (1280, 15970), (1597, 12800), (1600, 12776), (2560, 7985), (3194, 6400), (3200, 6388)]