21468993

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{4139}}^1$

素因数の和:4181

約数の個数: 32

約数和(自身を含む): 37094400

約数和(自身を除く): 15625407

約数列:

[1, 3, 7, 13, 19, 21, 39, 57, 91, 133, 247, 273, 399, 741, 1729, 4139, 5187, 12417, 28973, 53807, 78641, 86919, 161421, 235923, 376649, 550487, 1022333, 1129947, 1651461, 3066999, 7156331, 21468993]

約数ペア:

[(1, 21468993), (3, 7156331), (7, 3066999), (13, 1651461), (19, 1129947), (21, 1022333), (39, 550487), (57, 376649), (91, 235923), (133, 161421), (247, 86919), (273, 78641), (399, 53807), (741, 28973), (1729, 12417), (4139, 5187)]