12789760

素因数分解:

$2^{11}\times 5^1\times {\mathrm{1249}}^1$

素因数の和:1276

約数の個数: 48

約数和(自身を含む): 30712500

約数和(自身を除く): 17922740

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1249, 1280, 2048, 2498, 2560, 4996, 5120, 6245, 9992, 10240, 12490, 19984, 24980, 39968, 49960, 79936, 99920, 159872, 199840, 319744, 399680, 639488, 799360, 1278976, 1598720, 2557952, 3197440, 6394880, 12789760]

約数ペア:

[(1, 12789760), (2, 6394880), (4, 3197440), (5, 2557952), (8, 1598720), (10, 1278976), (16, 799360), (20, 639488), (32, 399680), (40, 319744), (64, 199840), (80, 159872), (128, 99920), (160, 79936), (256, 49960), (320, 39968), (512, 24980), (640, 19984), (1024, 12490), (1249, 10240), (1280, 9992), (2048, 6245), (2498, 5120), (2560, 4996)]