20121015280

素因数分解:

$2^4\times 5^1\times {\mathrm{251512691}}^1$

素因数の和:251512704

約数の個数: 20

約数和(自身を含む): 46781360712

約数和(自身を除く): 26660345432

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 251512691, 503025382, 1006050764, 1257563455, 2012101528, 2515126910, 4024203056, 5030253820, 10060507640, 20121015280]

約数ペア:

[(1, 20121015280), (2, 10060507640), (4, 5030253820), (5, 4024203056), (8, 2515126910), (10, 2012101528), (16, 1257563455), (20, 1006050764), (40, 503025382), (80, 251512691)]