20451999

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{223}}^1\times {\mathrm{1609}}^1$

素因数の和:1854

約数の個数: 16

約数和(自身を含む): 28851200

約数和(自身を除く): 8399201

約数列:

[1, 3, 19, 57, 223, 669, 1609, 4237, 4827, 12711, 30571, 91713, 358807, 1076421, 6817333, 20451999]

約数ペア:

[(1, 20451999), (3, 6817333), (19, 1076421), (57, 358807), (223, 91713), (669, 30571), (1609, 12711), (4237, 4827)]