25520240

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{4493}}^1$

素因数の和:4577

約数の個数: 40

約数和(自身を含む): 60183648

約数和(自身を除く): 34663408

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 4493, 5680, 8986, 17972, 22465, 35944, 44930, 71888, 89860, 179720, 319003, 359440, 638006, 1276012, 1595015, 2552024, 3190030, 5104048, 6380060, 12760120, 25520240]

約数ペア:

[(1, 25520240), (2, 12760120), (4, 6380060), (5, 5104048), (8, 3190030), (10, 2552024), (16, 1595015), (20, 1276012), (40, 638006), (71, 359440), (80, 319003), (142, 179720), (284, 89860), (355, 71888), (568, 44930), (710, 35944), (1136, 22465), (1420, 17972), (2840, 8986), (4493, 5680)]