20121664048

素因数分解:

$2^4\times {\mathrm{67}}^1\times {\mathrm{18770209}}^1$

素因数の和:18770284

約数の個数: 20

約数和(自身を含む): 39567602680

約数和(自身を除く): 19445938632

約数列:

[1, 2, 4, 8, 16, 67, 134, 268, 536, 1072, 18770209, 37540418, 75080836, 150161672, 300323344, 1257604003, 2515208006, 5030416012, 10060832024, 20121664048]

約数ペア:

[(1, 20121664048), (2, 10060832024), (4, 5030416012), (8, 2515208006), (16, 1257604003), (67, 300323344), (134, 150161672), (268, 75080836), (536, 37540418), (1072, 18770209)]